Belt Service Kits

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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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.

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 day

Sale - Save 4% $ 213.99

This product was last offered at the strikethrough price on
10-11-2026

$ 205.87 USD

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$ 205.87 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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$ 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

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$ 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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$ 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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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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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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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

Ships on Nov 12, 2026

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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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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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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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

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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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$ 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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$ 137.99

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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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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...

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T#:22163417

Part#: 11287582946TKT

Ships on Nov 12, 2026

Sale - Save 9% $ 223.99

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

$ 204.63 USD

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$ 223.99

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$ 204.63 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 in 1-3 days

$ 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

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

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T#:1241396

Part#: TMSN54BPKT

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$ 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...

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T#:22130428

Part#: 11281437929TKT

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Sale - Save 8% $ 264.99

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

$ 244.54 USD

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$ 264.99

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$ 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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Sale - Save 5% $ 256.99

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

$ 244.82 USD

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$ 256.99

This product was last offered at the strikethrough price on
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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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Sale - Save 1% $ 165.99

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

$ 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)

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T#:401686

Part#: 11281748131KT2

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Sale - Save 4% $ 272.99

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

$ 260.88 USD

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This product was last offered at the strikethrough price on
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$ 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

Ships in 1 day

$ 624.99

This product was last offered at the strikethrough price on
10-11-2026

$ 616.99 USD

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$ 616.99 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....

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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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$ 177.99

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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Accessory Belt Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:15744006

Part#: 11281469266KT-KT

Back Ordered

Sale - Save 2% $ 236.99

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

$ 233.22 USD

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Sale - Save 2%

$ 236.99

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

$ 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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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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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

Back Ordered

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

10X Entries Into Our F80 M3 Sweepstakes

T#:391555

Part#: S65LPPK-BELTKT

Ships in 1 day

$ 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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Qty

$ 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 day

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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Qty

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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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E46 M3, Z3M, Z...

10X Entries Into Our F80 M3 Sweepstakes

T#:23482931

Part#: S54KEVACCKT

Back Ordered

Sale - Save 2% $ 333.99

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

$ 327.68 USD

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Qty

Sale - Save 2%

$ 333.99

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

$ 327.68 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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OEM Accessory Belt Service Kit - E9X M3 S65

10X Entries Into Our F80 M3 Sweepstakes

T#:391554

Part#: 11287837898

Ships in 1 day

$ 964.99

This product was last offered at the strikethrough price on
08-24-2026

Starting at $ 939.99 USD

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Starting at $ 939.99 USD

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This comprehensive kit includes both belts, belt tensioners, upper and lower deflection pulleys, and the adjusting pulley. Select from all Genuine BMW parts or a combination of OEM/OE BMW parts. Staying on top of your belt maintenance is the smart move. Cracked or worn belts are a recipe for a headache or worse. The main drive belt runs critical components - the alternator, water pump, and power steering pump. The pulleys contain bearings that may be worn when it comes time to replace the belts. You can check the pulleys by relieving tension on the belt and feeling each pulley for play or grinding. The tensioner also sees similar wear. If your pulleys are new or don't need replacement, you can pick up the belts on their own.

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OEM Accessory Belt Service Kit - E34 525i M20

10X Entries Into Our F80 M3 Sweepstakes

T#:589759

Part#: PBTABE34M20KT

Ships in 5 Business Days

$ 144.23

This product was last offered at the strikethrough price on
10-09-2026

$ 142.09 USD

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$ 142.09 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 Kit - E46 M3

10X Entries Into Our F80 M3 Sweepstakes

T#:554437

Part#: E46M3ACCKT

Back Ordered

$ 350.99

This product was last offered at the strikethrough price on
08-24-2026

$ 328.99 USD

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Qty

$ 328.99 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.

Fits the following BMWs:
2001-2006 E46 BMW M3

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW N63 S63 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:23516122

Part#: 11287631824TKT

In Stock

$ 220.99

This product was last offered at the strikethrough price on
10-05-2026

$ 215.99 USD

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$ 215.99 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 Drive Belt, replacement A/C belt, and a 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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OEM Accessory Belt Service Kit - B46/48 B58

10X Entries Into Our F80 M3 Sweepstakes

T#:587399

Part#: 112886137071ABKT

In Stock

Sale - Save 19% $ 121.99

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

$ 98.77 USD

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Qty

Sale - Save 19%

$ 121.99

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

$ 98.77 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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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E46 E39 M54 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:23482922

Part#: 4PK863ATKT

Back Ordered

Sale - Save 3% $ 254.99

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

$ 246.93 USD

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Qty

Sale - Save 3%

$ 254.99

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

$ 246.93 USD

Add to Wish List

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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OEM Accessory Belt Kit - E39 M5

10X Entries Into Our F80 M3 Sweepstakes

T#:554436

Part#: E39M5ACCKT

Back Ordered

$ 674.99

This product was last offered at the strikethrough price on
08-27-2026

$ 653.99 USD

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$ 653.99 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.

Fits the following BMWs:
1996-2003 E39 BMW M5

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

10X Entries Into Our F80 M3 Sweepstakes

T#:554445

Part#: M54ACCKT

Back Ordered

Sale - Save 5% $ 249.99

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

$ 238.20 USD

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Qty

Sale - Save 5%

$ 249.99

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

$ 238.20 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:
09/2002-2006 E53 BMW X5 M54
09/2002-2003 E39 BMW M54
09/2002-2005 E46 BMW M54

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OEM Accessory Belt Service Kit - E83 X3 M54

10X Entries Into Our F80 M3 Sweepstakes

T#:593722

Part#: E83M54ABSKT

Back Ordered

$ 278.99

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

$ 266.99 USD

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Qty

$ 266.99 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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OEM Accessory Belt Service Kit - E70 X5 xDrive30i

10X Entries Into Our F80 M3 Sweepstakes

T#:593727

Part#: E70N52ABSKT

Ships on Feb 4, 2027

$ 256.99

This product was last offered at the strikethrough price on
10-01-2026

$ 255.99 USD

Add to Wish List

Qty

$ 255.99 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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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW N47 N57 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:23516116

Part#: 6PK1697TKT

Ships in 1 Business Day

$ 206.99

This product was last offered at the strikethrough price on
07-15-2026

$ 196.99 USD

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Qty

$ 196.99 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 Drive Belt, tensioner assembly, and new tensioner bolts. 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 - E39 540i, E38 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:23416543

Part#: 11287636377TKKT

Back Ordered

$ 364.99 USD

Add to Wish List

Qty

$ 364.99 USD

Add to Wish List

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 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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OEM Accessory Belt Service Kit - E38 740i/iL M62 (04/1997+)

10X Entries Into Our F80 M3 Sweepstakes

T#:589762

Part#: PBTABE38M62KT

Back Ordered

$ 273.99 USD

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Qty

$ 273.99 USD

Add to Wish List

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 - E36 325 M3 S50 M50

10X Entries Into Our F80 M3 Sweepstakes

T#:593731

Part#: E36S50ABSKT

Ships in 3 Business Days

$ 205.34 USD

Add to Wish List

Qty

$ 205.34 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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