BMW Drive Belts & V-Belts

Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW N55 F-Chas...

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T#:22097553

Part#: 11287628661TKT

Ships on Feb 23, 2027

Sale - Save 23% $ 131.99

This product was last offered at the strikethrough price on
06-16-2026

$ 101.98 USD

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$ 131.99

This product was last offered at the strikethrough price on
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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and idler pulley. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - F3X F22/23 N55 3.0L

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T#:587391

Part#: 11287628661ABKT

In Stock

$ 171.99

This product was last offered at the strikethrough price on
06-09-2026

$ 153.99 USD

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$ 153.99 USD

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This kit includes the basic components recommended to replace when it comes time to swap out your accessory belt.

Vargas N54/55 Billet Crank Seal Guard - BMW N54 N55 3.0L

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T#:638889

Part#: VTT-CRANKGUARD

In Stock

Starting at $ 89.99 USD

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Starting at $ 89.99 USD

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It is a well-known issue on the BMW N54/55 platforms that your serpentine belt can fail for various reasons. When this happens, there is a high chance of the belt getting sucked behind the front damper pulley and then being pushed past the crank seal into your oil pan. From there it can get sucked into the oil pick up causing total engine failure. Even if you do not lose the engine, it is a COSTLY repair to remove the sub-frame and drop the oil pan to remove the belt. The best way to combat this is to watch for oil leaks and keep up on your maintenance. BUT, even with those preventative measures, pre-mature belt failure can occur. This crank seal guard installs over your front crank seal and will keep the belt from being sucked in if a belt failure does occur. This is a cheap way to ensure you do not end up having to replace your motor from oil starvation due to an ingested belt. Vargas' seal is different from those already on market in two major ways. Firstly, it is not offensively priced. Secondly, it is 100% billet with no welds on the tabs to break, no cheap bent thin steel pieces. 100% Billet 6061-T6 aluminum, anodized black for long-term corrosion resistance. Crank Seal Guard includes: One VTT Billet N54/55 Crank Seal Guard Two extended 12.9 Grade bolts, and two stainless washers We highly recommend you install WITH a crank bolt capture at the same time, as you have to remove the damper anyway. Then you will get the benefit of helping eliminate the dreaded spun crank hub and the crank seal issue

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E9X M3 Performance Underdrive Pulley Kit

T#:593749

Part#: 10.00.011

Ships in 4 Business Days

$ 349.00 USD

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$ 349.00 USD

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Free additional power to your M3’s rear wheels without sacrificing or compromising your BMW’s reliability. Machined from 6061-T6 aerospace aluminum, Macht Schnell Performance Underdrive Pulleys are strong as well as lightweight to limit parasitic drag from the accessories within a moderate level for maximum performance on or off the track. After machining and engraving, pulleys are then T3 hard anodized for additional strength, anti-corrosion & wear resistance. Our DualDrive design replaces the Crank Accessory & Power Steering Pulleys, resulting in an additional 9-14 HP and 7-9ft. lbs TQ gain for the M3. Gains are due to a reduction in power required to turn accessories; an increase in accessories lifespan due to lower speed will also result. All factory harmonics/balancing are undisturbed. Macht Schnell Performance Underdrive Pulleys have no negative effect on accessory operation and comes fully equipped with new belts. Already have this kit and need new belts? See T#14491 and T#14489 Performance Underdrive Pulleys Features: DualDrive design allows maximum performance, with minor effect on accessory speed Proper cooling temperatures are retained at proper levels on or off the track Maintains proper alternator speed, allowing sustained levels to sensitive control modules Machined from 6061-T6 aerospace aluminum T3 Hard-Anodized for maximum strength and corrosion/wear resistance No affects to crankshaft dampening or harmonics Simple bolt-on installation

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Vargas "Spline Lock" Crank Hub Solution - Includes Crank Bolt Capture...

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T#:558795

Part#: VTT-CRANKHUB-1

Ships in 1-2 days

$ 889.99 USD

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$ 889.99 USD

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Under certain conditions, the N55 crank hub likes to spin, without warning and even when the engine is in perfect health. The engineers at Vargas saw and dealt with this problem time and again, and they saw fit to do something about it. This hub uses a proprietary "Spline Lock" technology that uses high tolerance machined splines which press into the crank, and positively lock the hub to the crank. The splines are machined in such a way that rotational forces drive the hub, and splines deeper into the crank meaning when the hub encounters a situation that would normally slip a stock hub the splined hub is driven into the crank to keep it in place (much like a splined extractor). Features: Installs the same as a stock hub Does NOT require the crank to be drilled for pins Manufactured from Harndered 17-4SS We suggest the Crank Hub System ONLY be installed by a qualified shop or technician. Timing tools are 100% REQUIRED if installed improperly engine damage may occur. DISCLAIMER: VTT and ECS are not responsible for any engine damage caused by improper installation, or misuse of the crank hub solution.

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OEM Accessory Belt Service Kit - N54 3.0L

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T#:554448

Part#: N54ACCKT

Ships in 1 Business Day

Sale - Save 5% $ 197.99

This product was last offered at the strikethrough price on
04-15-2026

$ 187.11 USD

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$ 197.99

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$ 187.11 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

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OEM Accessory Belt Service Kit - E82/88 E9X N55

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T#:567679

Part#: 11287582946KT4

Ships in 1-2 days

$ 213.63 USD

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$ 213.63 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need to be replaced such as the belts, tensioners, and hardware.

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OEM Accessory Belt Service Kit - N52 3.0L

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T#:593693

Part#: N52ABKT

In Stock

Sale - Save 22% $ 135.99

This product was last offered at the strikethrough price on
07-08-2026

$ 105.43 USD

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Sale - Save 22%

$ 135.99

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07-08-2026

$ 105.43 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW E82/88 E9X...

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T#:22163422

Part#: 11287568247TKT

Ships on Nov 12, 2026

Sale - Save 15% $ 209.99

This product was last offered at the strikethrough price on
04-15-2026

$ 178.94 USD

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$ 209.99

This product was last offered at the strikethrough price on
04-15-2026

$ 178.94 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and idler pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - F3X F10 N20 2.0L

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T#:587390

Part#: 11287594969ABKT

In Stock

Sale - Save 29% $ 89.15

This product was last offered at the strikethrough price on
06-29-2026

$ 62.94 USD

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Sale - Save 29%

$ 89.15

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$ 62.94 USD

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This kit includes the basic components recommended to replace when it comes time to swap out your accessory belt.

Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW N52 ...

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T#:22130432

Part#: 11287530314TKT

In Stock

Sale - Save 18% $ 127.99

This product was last offered at the strikethrough price on
05-03-2026

$ 104.71 USD

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$ 127.99

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$ 104.71 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and idler pulley. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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VTT Billet Power Steering Pulley - N54

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T#:7292042

Part#: VTT-N54-PSN54

Ships in 2 Business Days

Starting at $ 56.99 USD

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Starting at $ 56.99 USD

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Vargas has introduced their new Billet Power Steering pulleys for the N54 engine! A well-known issue with the N54 with Hydraulic power steering is the plastic pulley either hitting the subframe, or breaking on its own. This can result in the belt to be ejected from the pulley, and leave you stranded with no serpentine belt. This also increases the chance of sucking the belt into the engine through the front seal. Put an end to the dreaded plastic PS pulley issues with the VTT 100% Billet Aluminum PS pulley. These are constructed from 6061-T6 aluminum and anodize in one of 4 colors (Black, Red, Blue, and Clear) for a great look, and long-lasting finish. These weigh 11oz, very close to the weight of a stock pulley, and are lighter than the cast aluminum versions on the market.

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N54 AC Delete Accessory Belt Kit - BMW N54 3.0L

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T#:26771665

Part#: 7PK1660KT

In Stock

Sale - Save 13% $ 75.99

This product was last offered at the strikethrough price on
05-03-2026

$ 66.28 USD

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Sale - Save 13%

$ 75.99

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$ 66.28 USD

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This AC Delete Accessory Belt Kit includes a new idler pulley and a shorter ECS Kevlar belt for deleting your AC compressor. ECS Tuning Performance Kevlar reinforced belts give you that extra piece of mind! Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Tensile strength Elongation Hardness Temperature and oil resistance per standard JASO E 109-94 Flex testing per SAE J2432

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - F3X F10 N20 2....

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T#:22097555

Part#: 11287618848TKT

In Stock

Sale - Save 34% $ 106.99

This product was last offered at the strikethrough price on
06-01-2026

$ 70.48 USD

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Sale - Save 34%

$ 106.99

This product was last offered at the strikethrough price on
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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt and an OEM tensioner assembly. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the tensioner and upgrading your accessory belt is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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Rogue Engineering Power Pulley Set - E9X M3 (05/2008+)

T#:553839

Part#: PP.S65.V8.B

Ships in 6 Business Days

$ 295.00 USD

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$ 295.00 USD

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Rogue Engineering has developed a power pulley kit that reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This allows for perfect operation in daily driven vehicles without a hiccup or stutter. However, when the demand for power is requested, the power pulley kit allows for the freed power to become apparent. The term "power" pulley is a bit of a misnomer. Underdrive pulleys actually free up power by reducing the drag caused by the accessories. These pulleys are based off a calculated percentage from factory dimensions, so that particular component speeds are safely reduced without affecting their true purpose.

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Rogue Engineering Power Pulley Set - S54 - E46 M3, Z3/Z4 M

T#:553971

Part#: PP.S54

In Stock

$ 259.00 USD

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$ 259.00 USD

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Rogue Engineering has developed a power pulley kit that reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This allows for perfect operation in daily driven vehicles without a hiccup or stutter. However, when the demand for power is requested, the power pulley kit allows for the freed power to become apparent. The term "power" pulley is a bit of a misnomer. Underdrive pulleys actually free up power by reducing the drag caused by the accessories. These pulleys are based off a calculated percentage from factory dimensions, so that particular component speeds are safely reduced without affecting their true purpose.

Rogue Engineering Power Pullies are CNC machined from 6061-T6, heat treated aluminum and specially coated with a MIL-A-8625 Type III hard coat anodize finish. This kind of anodizing is not to be confused with a Type II cosmetic anodize finish (typical colors such as red, blue, silver, green, etc.). The hard coat anodize finish actually builds a small surface layer on top of the aluminum, preventing wear.

This part fits the following BMW engines:
S54

This part fits the following chassis:
E46, Z3, Z4

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - F07/10 F06/12/...

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T#:23482929

Part#: 8PK1478TKT

Ships on Nov 12, 2026

Sale - Save 23% $ 167.99

This product was last offered at the strikethrough price on
05-03-2026

$ 129.72 USD

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Sale - Save 23%

$ 167.99

This product was last offered at the strikethrough price on
05-03-2026

$ 129.72 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and new pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - F8X S55 ...

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T#:22163426

Part#: 11287848605TKT

Ships on Nov 12, 2026

$ 414.99

This product was last offered at the strikethrough price on
08-07-2026

$ 385.99 USD

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$ 385.99 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes ECS Kevlar Reinforced Drive Belts, tensioner assembly, and idler pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - E30 M20

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T#:554430

Part#: 64521706826KT1

Ships on Oct 28, 2026

$ 202.67 USD

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$ 202.67 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
1984-1991 E30 BWM 325, 325i/is/ix, 325e/es

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Accessory Belt Service Kit - E39 E46 M54 (2002+)

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T#:401685

Part#: 11287512762KT3

Back Ordered

Sale - Save 5% $ 228.99

This product was last offered at the strikethrough price on
06-23-2026

$ 217.54 USD

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$ 228.99

This product was last offered at the strikethrough price on
06-23-2026

$ 217.54 USD

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This kit covers many of the common wear items that should be changed any time the serpentine belt is being replaced. As these cars gain years and mileage the belt tensioners will also need to be replaced along with the actual belts. It won't do any good to replace the belt if the tensioners are worn. This kit will save you time and money over buying these pieces individually. This kit includes an updated hydraulic alternator tensioner for added reliability and longevity.

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - F22/23 F3X B58...

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T#:22097533

Part#: 11288613707TKT

Ships on Nov 12, 2026

Sale - Save 24% $ 137.99

This product was last offered at the strikethrough price on
05-03-2026

$ 105.35 USD

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Sale - Save 24%

$ 137.99

This product was last offered at the strikethrough price on
05-03-2026

$ 105.35 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and the hardware required to install the new tensioner. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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Performance Accessory Belt Kit - Kevlar Reinforced - BMW B46TU/B48TU...

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T#:29798952

Part#: 11288650740T1KT

Ships on Nov 12, 2026

Sale - Save 24% $ 137.99

This product was last offered at the strikethrough price on
05-03-2026

$ 105.35 USD

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Sale - Save 24%

$ 137.99

This product was last offered at the strikethrough price on
05-03-2026

$ 105.35 USD

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Having your accessory belt fail is a major inconvenience and can leave you on the side of the road if the alternator isn't charging and the mechanical water pump isn't turning. Over time the tensioner and the belt itself wears out and will eventually fail. This kit includes everything you need to service the belt drive system and keep everything in check. Included: ECS Tuning Kevlar Reinforced Performance Accessory Belt - Designed to resist OEM Febi Belt Tensioner Genuine BMW Tensioner Hardware

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW E82/88 E9X...

10X Entries Into Our F80 M3 Sweepstakes

T#:22163417

Part#: 11287582946TKT

Ships on Nov 12, 2026

Sale - Save 5% $ 223.99

This product was last offered at the strikethrough price on
09-16-2026

$ 212.39 USD

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$ 223.99

This product was last offered at the strikethrough price on
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$ 212.39 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, belt tensioner, and idler pullies. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - BMW F8X S55

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T#:589853

Part#: PBTABF8XS55KT

Ships on Oct 12, 2026

$ 433.99

This product was last offered at the strikethrough price on
07-07-2026

$ 412.99 USD

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$ 412.99 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

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S54 Turner Motorsport Ultimate Power Pulley And Drive Belt Overhaul S...

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T#:15710772

Part#: 11281730349-KT

Back Ordered

Sale - Save 1% $ 499.99

This product was last offered at the strikethrough price on
05-03-2026

$ 494.69 USD

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Sale - Save 1%

$ 499.99

This product was last offered at the strikethrough price on
05-03-2026

$ 494.69 USD

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The idea of power pulleys is simple. The less effort the engine puts into running accessories such as the water pump, power steering, pump alternator etc., the more of that power can be used elsewhere - your wheels! The way this is done by reducing the rotation of the pulleys by as much as 10-20%! The end result is more horsepower at your disposal. Turner has done extensive testing (on and off the track), to ensure that the accessory systems still function as intended and without failure. These pulleys offer an excellent compromise of power gains, reliability and performance. All Turner pulleys are constructed of high quality T-6061 aluminum for durability and longevity. They are also finished in a black hard anodizing, which is highly resistant to wear including chemical and heat exposure. They have been designed to carry stock-like aesthetics, but with increased strength properties and lighter weight. Because of the durable aluminum construction, you can also put the worries of a serious plastic failure to rest. These pulleys will last, all the while increasing horsepower too! While you're installing your Power Pulley Kit, it makes sense to overhaul your Accessory Belt System as well, so this kit includes our Accessory Belt Kit as well.

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Rogue Engineering Power Pulley - E46 (Non-M)

T#:554021

Part#: P.E46

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$ 225.00 USD

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$ 225.00 USD

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Rogue Engineering has developed a power pulley kit that reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This allows for perfect operation in daily driven vehicles without a hiccup or stutter. However, when the demand for power is requested, the power pulley kit allows for the freed power to become apparent. The term "power" pulley is a bit of a misnomer. Underdrive pulleys actually free up power by reducing the drag caused by the accessories. These pulleys are based off a calculated percentage from factory dimensions, so that particular component speeds are safely reduced without affecting their true purpose.

Rogue Engineering Power Pullies are CNC machined from 6061-T6, heat treated aluminum and specially coated with a MIL-A-8625 Type III hard coat anodize finish. This kind of anodizing is not to be confused with a Type II cosmetic anodize finish (typical colors such as red, blue, silver, green, etc.). The hard coat anodize finish actually builds a small surface layer on top of the aluminum, preventing wear.

Fits the following BMWs:
2000-2006 E46 BMW 323/325/328/330

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N54 "Bulletproof" Crank Hub & Serpentine Kit - BMW E82/88 E9X N54 3.0...

10X Entries Into Our F80 M3 Sweepstakes

T#:1241396

Part#: TMSN54BPKT

Back Ordered

$ 565.99

This product was last offered at the strikethrough price on
09-29-2026

$ 564.99 USD

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$ 564.99 USD

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BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter Looking to go even further and upgrade your Crank Hub as well? Check out T#558924

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E36 Z3 M52 S52...

10X Entries Into Our F80 M3 Sweepstakes

T#:22130428

Part#: 11281437929TKT

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05-03-2026

$ 244.54 USD

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Eliminate your squeaking accessory belt pulleys and cracked drive belts with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, an OEM A/C belt, belt tensioners, an idler pulley, and the hardware required for installation ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the belts, rollers, and tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - E46 E39 E53 M54 (Pre-09/2002) ...

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T#:554446

Part#: M54ACCKT2

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$ 244.82 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
2000-09/2002 E53 BMW X5 M54
2000-09/2002 E39 BMW M54
1999-09/2002 E46 BMW M54

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Hydraulic Alternator Belt Tensioner Conversion Kit

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T#:15710833

Part#: 11287838797-KT

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$ 163.64 USD

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The original mechanical design is has been discontinued by BMW. So now Turner offers this complete hydraulic tensioner conversion kit for your BMW alternator/water pump/power steering belt. Changes the old style mechanical design to the updated hydraulic design recommended by BMW. Includes the following parts Hydraulic Tensioner Adjusting Pulley Caps & Dust Guards Securing Hardware

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OEM Accessory Belt Service Kit - E39, E46 M54 (up to 2002)

10X Entries Into Our F80 M3 Sweepstakes

T#:401686

Part#: 11281748131KT2

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06-23-2026

$ 260.88 USD

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This kit covers many of the common wear items that should be changed any time the serpentine belt is being replaced. As these cars gain years and mileage the belt tensioners will also need to be replaced along with the actual belts. It won't do any good to replace the belt if the tensioners are worn. This kit will save you time and money over buying these pieces individually. This kit includes an updated hydraulic alternator tensioner for added reliability and longevity.

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N55 "Bulletproof" Crank Hub & Serpentine Kit - BMW E82/88 E9X N55 3.0...

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T#:1241397

Part#: TMSE90N55BPKT

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$ 624.99 USD

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BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW E60 N54 3....

10X Entries Into Our F80 M3 Sweepstakes

T#:22163416

Part#: 4485241TKT

Ships on Nov 12, 2026

Sale - Save 23% $ 177.99

This product was last offered at the strikethrough price on
05-03-2026

$ 136.47 USD

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This product was last offered at the strikethrough price on
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$ 136.47 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, belt tensioner, and idler pullies. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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S55 "Bulletproof" Crank Hub & Serpentine Kit - BMW F8X S55 3.0L ...

10X Entries Into Our F80 M3 Sweepstakes

T#:1241399

Part#: TMSS55BPKT

Ships on Dec 22, 2026

$ 799.99 USD

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$ 799.99 USD

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BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter Looking to go even further and upgrade your Crank Hub as well? Check out T#585961 and T#599784!

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BMW E9X M3 Replacement Belt For Underdrive Pulley Kit - (D560-0004) ...

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Call In, Chat, Or Email, For Best Price! Limited Time Only!

T#:586064

Part#: D561-0002

Ships in 5 Business Days

Sale - Save 10% $ 126.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 114.26 USD

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BMW E9X M3 Replacement Belt For Underdrive Pulley Kit - (D560-0004) is an essential component designed specifically for the Underdrive Pulley Kit. This belt is one of the two required for optimal performance of the kit.

Designed for Precision: Tailored to fit the BMW E9X M3 Underdrive Pulley Kit perfectly.
High-Quality Construction: Built to withstand the demands of high-performance driving.
Optimal Performance: Ensures smooth operation and reliable power delivery.
Easy Replacement: Simple to install, making maintenance straightforward.

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Accessory Belt Kit

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T#:15744006

Part#: 11281469266KT-KT

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06-16-2026

$ 233.22 USD

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$ 233.22 USD

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Having your accessory belt fail is definitely inconvenient, and can leave you on the side of the road if the alternator isn't charging. Over time the tensioner and the belt itself gets worn and will eventually fail. Turner Motorsport has assembled a convenient kit with this in mind. This kit includes everything you need to service the belt drive system and keep everything in check. This kit includes: Continental accessory belts Ruville A/C belt tensioner URO idler and belt tensioner pulleys LUK hydraulic tensioner assembly Idler pulley securing bolt

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OEM Accessory Belt Service Kit - F10 F12 F13 F15 F16 F01 F02 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:554454

Part#: N55BMWKT

Ships on Jan 11, 2027

Sale - Save 7% $ 200.99

This product was last offered at the strikethrough price on
06-09-2026

$ 187.58 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

For vehicles with dynamic or adaptive drive

Fits the following BMWs:
F01/02 BMW 740i/Li/Li xDrive
F10 BMW 535i/i xDrive
F12/3 BMW 640i/i xDrive
F15 BMW X5 s/xDrive35i
F16 BMW X6 s/xDrive35i

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Active Autowerke Power Pulley Kit - E9x M3

For vehicles with production date 2007-5/2008

T#:397285

Part#: 13-001

Ships in 3 Business Days

5% off MSRP $ 399.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 379.99 USD

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$ 399.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 379.99 USD

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Easy to install - reduces parasitic losses from belt driven auxiliary components. Engine crankshaft pulley remains the same, this modification simply unleashes untapped potential from your vehicle. Expect to see gains around 10 RWHP from your S65. All BMW power pulleys included, including alternator, water pump, and power steering pulleys.

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Dinan Underdrive Crankshaft Pulley Kit - E60 M5, E63/64 M6 S85 5.0L ...

Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes

T#:21078436

Part#: D560-0001

Ships in 5 Business Days

Sale - Save 10% $ 449.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 404.96 USD

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09-28-2026

$ 404.96 USD

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Dinan's lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13 percent, reducing parasitic drag on the engine for a 6 HP @ 8000 RPM and 4 lb-ft torque @ 8000 RPM gain on a stock vehicle. The Dinan underdrive pulley retains the factory harmonic crankshaft damper, eliminating vibration that might otherwise damage the crankshaft. The kit includes all of the necessary mounting hardware, a lightweight pulley, and shorter belts. This product is backed by our industry-leading 4 year/50,000 mile warranty so you can rest assured that you are purchasing the best quality product for your BMW. Features: All accessories are underdriven by 13% to decrease drag on the engine. Lightweight billet aluminum crankshaft pulley, black anodized and engraved. Includes mounting hardware and shorter belts.

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OEM Accessory Belt Service Kit - E36 328 M3, Z3 2.8 M Coupe/Roadster ...

10X Entries Into Our F80 M3 Sweepstakes

T#:593717

Part#: M52ABSKT

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$ 241.99 USD

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$ 241.99 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need to be replaced such as the belts, tensioners, and hardware.

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Dinan Replacement Underdrive Pulley Belt For D560-0001 - Power Steeri...

Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes

T#:21078443

Part#: D561-0005

Ships in 5 Business Days

Sale - Save 10% $ 63.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 57.56 USD

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Replacement Belt for Underdrive Pulley Kit (D560-0001). This belt attaches to the power steering and air conditioner.

E9X M3 6/2008+ Dinan Underdrive Pulley Kit

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T#:389532

Part#: D560-0004

Ships in 5 Business Days

Sale - Save 10% $ 449.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 404.96 USD

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$ 449.99

This product was last offered at the strikethrough price on
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$ 404.96 USD

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Dinan Replacement Underdrive Pulley Belt For D560-0001 - Alternator/W...

Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes

T#:21078444

Part#: D561-0006

Ships in 5 Business Days

Sale - Save 10% $ 63.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 57.56 USD

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Replacement Belt for Underdrive Pulley Kit (D560-0001). This belt drives the alternator and water pump.

Replacement Belt For Underdrive Pulley Kit D560-0003 & D560-0004 ...

Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes

T#:586065

Part#: D561-0007

Ships in 5 Business Days

Sale - Save 10% $ 95.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 86.30 USD

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$ 86.30 USD

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Rogue Engineering Power Pulley Set - E9X M3 (up to 05/2008)

T#:553840

Part#: PP.S65.V8.A

Ships in 8 Business Days

$ 295.00 USD

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$ 295.00 USD

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Rogue Engineering has developed a power pulley kit that reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This allows for perfect operation in daily driven vehicles without a hiccup or stutter. However, when the demand for power is requested, the power pulley kit allows for the freed power to become apparent. The term "power" pulley is a bit of a misnomer. Underdrive pulleys actually free up power by reducing the drag caused by the accessories. These pulleys are based off a calculated percentage from factory dimensions, so that particular component speeds are safely reduced without affecting their true purpose.

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OEM Belt and Tensioner Service Kit for Power Pulley Kit - E9X M3 ...

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T#:391555

Part#: S65LPPK-BELTKT

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$ 928.99 USD

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$ 928.99 USD

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We’ve put together the Ultimate Belt & Tensioner Renewal Kit, curated specifically for M3 owners running our Turner E9X M3 Pulley Upgrade. Designed to restore factory fresh mechanical precision while maintaining high performance reliability

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Water Pump/Alternator Accessory Belt Service Kit w/ Kevlar Reinforced...

10X Entries Into Our F80 M3 Sweepstakes

T#:22097556

Part#: 6PK1548TKT

Ships on Feb 23, 2027

$ 129.99 USD

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$ 129.99 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Accessory Belt, tensioner assembly, and your idler pulley. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - E60 M5, E63 E64 M6 S85

10X Entries Into Our F80 M3 Sweepstakes

T#:584180

Part#: 11287838226KT4

Ships in 4 Business Days

$ 908.99

This product was last offered at the strikethrough price on
09-26-2026

$ 902.99 USD

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$ 902.99 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

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N55 "Bulletproof" Crank Hub & Serpentine Kit - BMW F22/23 F3X N55 3.0...

10X Entries Into Our F80 M3 Sweepstakes

T#:1241398

Part#: TMSF30N55BPKT

Ships on Feb 23, 2027

$ 550.99

This product was last offered at the strikethrough price on
09-29-2026

$ 549.99 USD

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$ 549.99 USD

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BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate ECS Kevlar reinforced accessory belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E90 335d M57 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:23416570

Part#: 11287792059TKT

Ships in 1-2 days

Sale - Save 6% $ 240.99

This product was last offered at the strikethrough price on
06-01-2026

$ 226.75 USD

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Sale - Save 6%

$ 240.99

This product was last offered at the strikethrough price on
06-01-2026

$ 226.75 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belts, tensioner assemblies, and new tensioner pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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