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BMW M3 Engine Drive Belt Parts

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Hydraulic Alternator Belt Tensioner Assembly

ES#2574923 - 11287838797 - Hydraulic Alternator Belt Tensioner Assembly - Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley - Ruville - BMW

Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley

Brand:
Ruville - Corporate Logo
ES#:
2574923
Mfg#:
11287838797
In Stock
$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit

ES#3651491 - 11288088632KT1 - Accessory Belt Kit - Utilizes factory components - Genuine BMW - BMW

Utilizes factory components

Brand:
Genuine BMW - Corporate Logo
ES#:
3651491
Mfg#:
11288088632KT1
Ships in 1-2 days
$483.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#259465 - 11287841228 - Idler Pulley - Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems - Ina - BMW
ECS Tuning recommends this product.

Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
259465
Mfg#:
11287841228
In Stock
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Belt Tensioner

ES#21803 - 11287835417 - Hydraulic Belt Tensioner - Hydraulic tensioner for water pump belt, just tensioner, does not come with relay lever assembly - Genuine BMW - BMW

Hydraulic tensioner for water pump belt, just tensioner, does not come with relay lever assembly

Brand:
Genuine BMW - Corporate Logo
ES#:
21803
Mfg#:
11287835417
In Stock
3% off MSRP

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

$165.99

This product was last offered at the strikethrough price on
07-20-2026

$160.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit

ES#2593867 - 11287837898KT1 - Accessory Belt Kit - Everything you need to service your belt drive system using quality aftermarket components - Assembled By ECS - BMW

Everything you need to service your belt drive system using quality aftermarket components 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2593867
Mfg#:
11287837898KT1
Ships in 9 Business Days
Auto Notify
ON SALE! SAVE 11%
$274.00

This product was last offered at the strikethrough price on
07-20-2026

$244.33 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner - Mechanical

ES#4830645 - 11288570439 - Accessory Belt Tensioner - Mechanical - For Gen 1 B58 - Bremmen Parts - BMW MINI

For Gen 1 B58 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4830645
Mfg#:
11288570439
In Stock
ON SALE! SAVE 20%
$93.99

This product was last offered at the strikethrough price on
05-02-2026

$75.06 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Assembly

ES#3129598 - 11287838797 - Hydraulic Alternator Belt Tensioner Assembly - Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley - URO - BMW

Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3129598
Mfg#:
11287838797
In Stock
$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

S54 Power Pulley Kit

ES#3191638 - PPK-S54 - S54 Power Pulley Kit - Possibly the best horsepower-per-dollar available anywhere. No downsides, no compromises! - Turner Motorsport - BMW

Possibly the best horsepower-per-dollar available anywhere. No downsides, no compromises! 10X Entries For Our 25th Anniversary Sweepstakes!
Gains of up to 10hp on a stock M3!

Brand:
Turner Motorsport - Corporate Logo
ES#:
3191638
Mfg#:
PPK-S54
In Stock
ON SALE! SAVE 25%
$418.99

This product was last offered at the strikethrough price on
06-13-2026

$314.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#3184303 - 11288673720 - Idler Pulley - Directs the accessory serpentine belt. - Ina - BMW
ECS Tuning recommends this product.

Directs the accessory serpentine belt. We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3184303
Mfg#:
11288673720
In Stock
$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Accessory Belt Kit - Kevlar Reinforced

ES#4636449 - 11287848605KBKT - Performance Accessory Belt Kit - Kevlar Reinforced - Utilizes high quality components and our performance Kevlar reinforced belts - Assembled By ECS - BMW

Utilizes high quality components and our performance Kevlar reinforced belts 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4636449
Mfg#:
11287848605KBKT
In Stock
$414.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Roller

ES#2137092 - 11281748131 - Hydraulic Alternator Belt Tensioner Roller - Replacement is recommend with every belt service - Ina - BMW
ECS Tuning recommends this product.

Replacement is recommend with every belt service We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
2137092
Mfg#:
11281748131
In Stock
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crank Bolt Capture Plate - BMW N55, S55

ES#5396565 - 034-113-Z016 - Crank Bolt Capture Plate - BMW N55, S55 - Don't slip your crank hub! Replace the factory crank bolt capture plate with this upgraded motorsport grade plate. - 034Motorsport - BMW

Don't slip your crank hub! Replace the factory crank bolt capture plate with this upgraded motorsport grade plate.

Brand:
034Motorsport - Corporate Logo
ES#:
5396565
Mfg#:
034-113-Z016
In Stock
$78.00 USD
Free Shipping

Deflection Pulley

ES#4830650 - 11288673720 - Deflection Pulley - Directs the accessory serpentine belt. - Bremmen Parts - BMW

Directs the accessory serpentine belt. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4830650
Mfg#:
11288673720
In Stock
ON SALE! SAVE 10%
$27.99

This product was last offered at the strikethrough price on
05-02-2026

$25.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mechanical A/C Belt Tensioner Assembly

ES#4759474 - 11281433571 - Mechanical A/C Belt Tensioner Assembly - Complete tensioner assembly with roller - Bremmen Parts - BMW

Complete tensioner assembly with roller 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4759474
Mfg#:
11281433571
In Stock
ON SALE! SAVE 21%
$59.99

This product was last offered at the strikethrough price on
05-02-2026

$47.32 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mechanical A/C Belt Tensioner Assembly

ES#2137122 - 11281433571 - Mechanical A/C Belt Tensioner Assembly - Complete tensioner assembly with roller - Ina - BMW
ECS Tuning recommends this product.

Complete tensioner assembly with roller We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
2137122
Mfg#:
11281433571
In Stock
$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Drive Belt Parts

Drive belts transfer crankshaft power to various accessories, including the alternator, water pump, power steering pump, and air conditioning compressor. Replacement of drive belts, serpentine belts, and drive belt tensioners at recommended service intervals helps you avoid untimely breakdowns and expensive vehicle repairs.

Let us help you find the parts that fit your BMW

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Manufacturer names and/or part numbers are used only for identification purposes.

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