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BMW Engine Drive Belt Parts

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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!
For vehicles with production date up to 09/2002

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

Hydraulic Alternator Belt Pulley

ES#21809 - 11287838194 - Hydraulic Alternator Belt Pulley - Hydraulic tensioner pulley for alternator/water pump belt, does not come with tensioner. - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
21809
Mfg#:
11287838194
In Stock
8% off MSRP

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

$250.99

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

$229.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E70 Mechanical Belt Tensioner

ES#3187888 - 11287799851 - E70 Mechanical Belt Tensioner - Original equipment German-made tensioner for alternator, A/C and power steering system - Mubea - BMW

Original equipment German-made tensioner for alternator, A/C and power steering system

Brand:
Mubea - Corporate Logo
ES#:
3187888
Mfg#:
11287799851
In Stock
ON SALE! SAVE 32%
$123.99

This product was last offered at the strikethrough price on
03-24-2026

$84.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upper Idler Pulley

ES#2593863 - 11287556251 - Upper Idler Pulley - The higher idler pulley - Ina - BMW
ECS Tuning recommends this product.

The higher idler pulley We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
2593863
Mfg#:
11287556251
In Stock
$41.86

This product was last offered at the strikethrough price on
03-25-2026

$40.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E39 M5 Accessory Belt Tensioner Pulley Assembly

ES#21705 - 11282248214 - E39 M5 Accessory Belt Tensioner Pulley Assembly - Tensioner for the water pump, alternator and power steering belt. Does not include hydraulic tensioner. - Genuine BMW - BMW

Tensioner for the water pump, alternator and power steering belt. Does not include hydraulic tensioner.

Brand:
Genuine BMW - Corporate Logo
ES#:
21705
Mfg#:
11282248214
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.

$446.99

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

$432.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Accessory Belt - Water Pump/Alternator - S54 S65

ES#4661030 - 6PK1460 - Performance Kevlar Reinforced Accessory Belt - Water Pump/Alternator - S54 S65 - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Replaces BMW # 11287837898 - ECS - BMW
ECS Tuning recommends this product.

Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Replaces BMW # 11287837898 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4661030
Mfg#:
6PK1460
In Stock
$33.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner Assembly

ES#3648482 - 11287594969 - Accessory Belt Tensioner Assembly - This is the main belt tensioner for A/C, and alternator - Ina - BMW
ECS Tuning recommends this product.

This is the main belt tensioner for A/C, and alternator We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3648482
Mfg#:
11287594969
In Stock
$72.99

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

$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Tensioner Pulley

ES#254055 - 11287841527 - Tensioner Pulley - Used on secondary A/C belt - Genuine BMW - BMW

Used on secondary A/C belt

Brand:
Genuine BMW - Corporate Logo
ES#:
254055
Mfg#:
11287841527
In Stock
8% off MSRP

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

$286.99

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

$262.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt

ES#2635521 - 11281437929 - Accessory Belt - Drives the alternator, water pump, and power steering pump - Continental - BMW

Drives the alternator, water pump, and power steering pump We Price Match - Give Us A Call or Chat!
For vehicles with production date from 09/1991

Brand:
Continental - Corporate Logo
ES#:
2635521
Mfg#:
11281437929
In Stock
$18.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Belt - N52

ES#4485239 - 6pk1990 - Performance Kevlar Reinforced Belt - N52 - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - BMW
ECS Tuning recommends this product.

Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4485239
Mfg#:
6PK1990
Ships in 9 Business Days
Auto Notify
$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit

ES#2586762 - 11281469266KT - Accessory Belt Kit - Includes both belts, tensioners, and rollers - Assembled By ECS - BMW

Includes both belts, tensioners, and rollers 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586762
Mfg#:
11281469266KT
In Stock
ON SALE!
$237.99

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

$229.43 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit

ES#2718483 - 11287837898KT2 - Accessory Belt Kit - Everything you need to service your belt drive system using genuine BMW components - Genuine BMW - BMW

Everything you need to service your belt drive system using genuine BMW components For vehicles with production date from 04/2008

Brand:
Genuine BMW - Corporate Logo
ES#:
2718483
Mfg#:
11287837898KT2
Ships in 4 Business Days
$1028.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner Assembly

ES#2714083 - 11288604266 - Accessory Belt Tensioner Assembly - This is the main belt tensioner for A/C, power steering and alternator - Genuine BMW - BMW

This is the main belt tensioner for A/C, power steering and alternator

Brand:
Genuine BMW - Corporate Logo
ES#:
2714083
Mfg#:
11288604266
Ships in 4 Business Days
6% off MSRP

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

$179.99

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

$168.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

S54 Turner Motorsport Ultimate Power Pulley And Drive Belt Overhaul System

ES#3509738 - uppk-s54KT - S54 Turner Motorsport Ultimate Power Pulley And Drive Belt Overhaul System - Includes Accessory Belt System! - Assembled By ECS - BMW

Includes Accessory Belt System! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3509738
Mfg#:
UPPK-S54KT
Ships in 9 Business Days
Auto Notify
ON SALE! SAVE 18%
$814.99

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

$666.33 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

N55 "Bulletproof" Crank Kit

ES#4642987 - ECSF30N55BPKRKT - N55 "Bulletproof" Crank Kit - .or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service. Featuring Kevlar reinforced belt! - Assembled By ECS - BMW

...or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service. Featuring Kevlar reinforced belt! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4642987
Mfg#:
ECSF30N55BPKRKT
In Stock
ON SALE!
$520.99

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

$492.07 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Performance Accessory Belt Kit - Kevlar Reinforced

ES#4716080 - 4485241KT - Performance Accessory Belt Kit - Kevlar Reinforced - Utilizes high quality components and our performance Kevlar reinforced belt - Assembled By ECS - BMW

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

Brand:
Assembled By ECS - Corporate Logo
ES#:
4716080
Mfg#:
4485241KT
In Stock
ON SALE! SAVE 23%
$177.99

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

$136.47 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.

Other BMW Engine Drive Belt Parts

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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