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BMW Drive Belts & V-Belts

Your BMW's drive belts are wear items, and will degrade and crack over time. Don't wait until you have a belt failure... don't get stranded! Replacing your BMW's belts, such as the alternator belt, power steering belt, air conditioning AC belt, or serpentine belt is a low cost insurance policy to preventing a break down -- or worse, engine damage. We recommend checking your belts every 10,000 miles. If your belts have excessive cracks, dry rot, missing teeth and/or grooves, are cause noise, it's time for new ones.

While also inspecting your serpentine belts, also check for wear or resistance in the pulleys. The tensioner pulley and deflection pulley are the primary sources for belt squealing. The rubber-isolated pulleys can also break apart, leading to total belt failure. We sell the tensioner and deflection pulleys for the M50 engine family used in the E34, E36, E39, E46, X5, Z3, and Z4.

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Packaged by Turner - Corporate Logo
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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$ 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 - N54 3.0L
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
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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This product was last offered at the strikethrough price on
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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
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
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
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
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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$ 135.99

This product was last offered at the strikethrough price on
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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Packaged by Turner - Corporate Logo
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
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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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Lower Idler Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32350850
Part#: 11287557851
In Stock
Sale - Save 15% $ 27.99

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

$ 23.79 USD
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$ 27.99

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05-03-2026

$ 23.79 USD
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OEM Accessory Belt Service Kit - F3X F10 N20 2.0L
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
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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This kit includes the basic components recommended to replace when it comes time to swap out your accessory belt.
Accessory Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32350851
Part#: 11288604266
In Stock
Sale - Save 7% $ 51.99

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

$ 48.59 USD
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Sale - Save 7%
$ 51.99

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$ 48.59 USD
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Packaged by Turner - Corporate Logo
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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This product was last offered at the strikethrough price on
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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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Mechanical A/C Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:26305100
Part#: 11281433571
In Stock
Sale - Save 21% $ 59.99

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

$ 47.32 USD
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$ 47.32 USD
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Accessory Belt Tensioner - Mechanical
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32450133
Part#: 11288570439
In Stock
Sale - Save 20% $ 93.99

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

$ 75.06 USD
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Upper Idler Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:26305073
Part#: 11287556251
In Stock
Sale - Save 25% $ 31.99

This product was last offered at the strikethrough price on
07-14-2026

$ 23.99 USD
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Accessory Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:29101657
Part#: 11287563927
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 57.79 USD
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$ 69.99

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N54 AC Delete Accessory Belt Kit - BMW N54 3.0L
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
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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Deflection Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:34080699
Part#: 11287578674
In Stock
Sale - Save 21% $ 28.99

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

$ 22.84 USD
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This product was last offered at the strikethrough price on
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$ 22.84 USD
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Packaged by Turner - Corporate Logo
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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$ 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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Deflection Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32450136
Part#: 11288673720
In Stock
Sale - Save 10% $ 27.99

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

$ 25.19 USD
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05-03-2026

$ 25.19 USD
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Bremmen Parts - Corporate Logo
T#:39497969
Part#: 11287530314
In Stock
Sale - Save 21% $ 54.99

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05-03-2026

$ 43.24 USD
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$ 54.99

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$ 43.24 USD
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This tensioner keeps the belt for the alternator, power steering, and air conditioning taut to provide maximum performance of each system.

Mechanical A/C Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32350880
Part#: 11287512758
In Stock
Sale - Save 15% $ 52.99

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

$ 45.04 USD
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$ 45.04 USD
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Accessory Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32350878
Part#: 11287594969
In Stock
Sale - Save 15% $ 47.99

This product was last offered at the strikethrough price on
06-18-2026

$ 40.79 USD
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$ 47.99

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$ 40.79 USD
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Belt Tensioner
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32450132
Part#: 11287549873
In Stock
Sale - Save 20% $ 85.99

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

$ 68.54 USD
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A/C Belt Tensioner - 11281717210
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:36913367
Part#: 11281717210
In Stock
Sale - Save 25% $ 66.99

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

$ 50.00 USD
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Also known as a shock damper, the accessory belt tensioner is used to tension the air conditioning compressor belt. This ensures proper contact with the belt drive pulleys and prevents premature wear from improper tension.

If your belt is wearing prematurely or has excess slack, your belt tensioner may be to blame. Replace it with this high-quality Bremmen Parts tensioner to ensure proper tension and air conditioning functionality.

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Packaged by Turner - Corporate Logo
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
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$ 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 - E39 E46 M54 (2002+)
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
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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This product was last offered at the strikethrough price on
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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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Packaged by Turner - Corporate Logo
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
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$ 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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Packaged by Turner - Corporate Logo
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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Packaged by Turner - Corporate Logo
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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Packaged by Turner - Corporate Logo
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
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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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Packaged by Turner - Corporate Logo
T#:554446
Part#: M54ACCKT2
Back Ordered
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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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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Deflection Pulley - Priced Each
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32450135
Part#: 11287790448
In Stock
Sale - Save 21% $ 26.99

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

$ 21.24 USD
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Sale - Save 21%
$ 26.99

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

$ 21.24 USD
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OEM Accessory Belt Service Kit - E39, E46 M54 (up to 2002)
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:401686
Part#: 11281748131KT2
Back Ordered
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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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 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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Packaged by Turner - Corporate Logo
T#:22130428
Part#: 11281437929TKT
Back Ordered
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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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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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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Hydraulic Alternator Belt Tensioner Conversion Kit
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15710833
Part#: 11287838797-KT
Back Ordered
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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Sale - Save 1%
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This product was last offered at the strikethrough price on
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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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Idler Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:34080698
Part#: 11287578675
In Stock
Sale - Save 21% $ 27.99

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

$ 22.02 USD
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Sale - Save 21%
$ 27.99

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

$ 22.02 USD
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Packaged by Turner - Corporate Logo
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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Sale - Save 23%
$ 177.99

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

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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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Packaged by Turner - Corporate Logo
T#:554454
Part#: N55BMWKT
Ships on Jan 11, 2027
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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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Accessory Belt Kit
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15744006
Part#: 11281469266KT-KT
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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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T#:23482931
Part#: S54KEVACCKT
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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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Packaged by Turner - Corporate Logo
T#:23416570
Part#: 11287792059TKT
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$ 226.75 USD
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$ 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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Packaged by Turner - Corporate Logo
T#:16580
Part#: E60-M5-UDP-BELTS
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These are the replacement drive belts used in our Turner Pulley Kit on the S85 V10 engine (E60 M5 and E63/E64 M6). These belts are shorter than the stock belt since our underdrive crank pulley is a larger diameter than stock. Because of the different lengths, you cannot use a stock belt with the Pulley Kit. This set of belts includes the main drive belt (6PK-1400) and the A/C belt (6PK-1045).

This belt set fits the following BMWs with the Turner Pulley Kit:
2006-2010 E60 BMW M5
2004-2011 E63 E64 BMW M6
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OEM Accessory Belt Service Kit - B46/48 B58
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:587399
Part#: 112886137071ABKT
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$ 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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Packaged by Turner - Corporate Logo
T#:23482922
Part#: 4PK863ATKT
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$ 246.93 USD
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This product was last offered at the strikethrough price on
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$ 246.93 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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Hydraulic Alternator Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:55030822
Part#: 11287838797
Ships on Nov 10, 2026
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Packaged by Turner - Corporate Logo
T#:554445
Part#: M54ACCKT
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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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Packaged by Turner - Corporate Logo
T#:393209
Part#: E46S54SIPULLEY
Ships in 8 Business Days
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Shark Injector Performance Software
The enthusiast's choice for over a decade, the Shark Injector's performance is only equaled by its own ease of install! Tune your ECU at the press of a button simply by plugging into the under-dash OBDII diagnostic port, there is no removal of your car's computer; no laptop or cables required. What does the Shark offer?

  • Excellent horsepower and torque gains - peak: 18whp/11wtq, max: 22whp/16wtq
  • Faster and smoother throttle response
  • Top speed limiter removed
  • Extremely easy to install/uninstall
  • Reversible and reusable
  • Elevated 8,250 RPM rev limiter
  • Compatible with 91 octane; 93 recommended

​Turner Motorsport Power Pulleys 
Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! We measured 10.7 whp at 6960 rpm and 8.1 lb-ft of torque at 5550 on a 1995 M3. Race pulleys deliver even more power. 

Another "no-downside" upgrade, we even include a new belt. Total install time for a 3-piece pulley set should be around 1.5 hours. We offer three options in pulleys:
1.) No alternator pulley included - for cars with big amps and powerful stereo systems that need the extra juice.
2.) Street Power Pulleys - our most popular option with no downside!
3.) Race Power Pulleys - delivering 15 "free" horsepower, this set underdrives the water pump, power steering pulley, and alternator for lower temps, less wear, and more power. Not for street use. 

 

 

Intake Air Temperature Relocation Kit
Looking to maximize your power gains? Add a Turner IAT Relocation to combat power-robbing heat soak - the only true plug-and-play solution available. Heat soak is a real plague on consistent power for a stock or tuned vehicle. Click here to read more about our IAT relocation kit.

 

This item fits the following BMWs:
2001-2006 E46 BMW M3

 

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Alternator Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:52164889
Part#: 12317560483
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Is your BMW making a chirping or grinding noise at idle? The culprit is frequently a failing alternator decoupler pulley. Unlike a traditional solid pulley, this Overrunning Alternator Pulley (OAP) allows the alternator rotor to "freewheel" when engine speeds drop suddenly. This specialized function protects your BMW drive belt and belt tensioner from excessive snap-back, vibration, and "belt slap."

Prevent Catastrophic Engine Failure

Over time, the internal clutch mechanism can seize or slip, leading to accelerated wear or total serpentine belt failure. On BMW engines, a snapped belt can be ingested through the front main seal, causing catastrophic engine damage. Replacing this pulley is a cost-effective preventative maintenance step that restores smoothness to your accessory drive without the high cost of a complete alternator replacement.

Features & Benefits:

Lowers the load on the drive belt, tensioner, and AC compressor.
Stops "belt slap" and rhythmic chirping noises during deceleration and idle.
Direct Replacement with high-quality construction ensures perfect fitment and long-term durability.
Essential Maintenance for N52 engines

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Deflection Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:26305076
Part#: 11287535860
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Idler Pulley
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Bremmen Parts - Corporate Logo
T#:30629656
Part#: 11287841228
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$ 15.50 USD
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Packaged by Turner - Corporate Logo
T#:29798950
Part#: 11288650740TKT
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$ 123.62 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: Gates Green Heavy Duty Accessory Belt - Designed to exceed OE durability, felxibility, and longevity OEM Febi Belt Tensioner Genuine BMW Tensioner Hardware
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Accessory Belt Idler Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32350879
Part#: 11287615130
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$ 17.94 USD
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