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BMW 335i Engine Drive Belt Parts

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Lower Idler Pulley

ES#4830505 - 11287557851 - Lower Idler Pulley - The lowest of the idler pulleys on the accessory drive belt. - Bremmen Parts - BMW

The lowest of the idler pulleys on the accessory drive belt. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4830505
Mfg#:
11287557851
In Stock
ON SALE! SAVE 15%
$27.99

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

$23.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upper Idler Pulley

ES#4759442 - 11287556251 - Upper Idler Pulley - The higher idler pulley - Bremmen Parts - BMW

The higher idler pulley affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4759442
Mfg#:
11287556251
In Stock
ON SALE! SAVE 20%
$30.99

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

$24.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

N54 "Bulletproof" Crank Kit

ES#4365384 - ECSn54bpKT - N54 "Bulletproof" Crank Kit - .or at least as "Bulletproof" as your N54 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. - Assembled By ECS - BMW

...or at least as "Bulletproof" as your N54 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4365384
Mfg#:
ECSN54BPKT
Back Ordered
Auto Notify
ON SALE!
$590.99

This product was last offered at the strikethrough price on
04-13-2026

$558.04 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Lower Idler Pulley

ES#2580611 - 11287557851 - Lower Idler Pulley - The lowest of the idler pulleys on the accessory drive belt. - Ina - BMW
ECS Tuning recommends this product.

The lowest of the idler pulleys on the accessory drive belt. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
2580611
Mfg#:
11287557851
In Stock
$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Deflection Pulley

ES#3131377 - 11287578674 - Deflection Pulley - A/C belt idler pulley - Ina - BMW
ECS Tuning recommends this product.

A/C belt idler pulley affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3131377
Mfg#:
11287578674
In Stock
$46.99

This product was last offered at the strikethrough price on
01-26-2026

$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#3131378 - 11287578675 - Idler Pulley - An important belt drive component - Ina - BMW
ECS Tuning recommends this product.

An important belt drive component affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3131378
Mfg#:
11287578675
In Stock
$40.99

This product was last offered at the strikethrough price on
12-10-2025

$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit

ES#2681866 - 11287582946KT - 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2681866
Mfg#:
11287582946KT
Ships in 1-2 days
$438.99

This product was last offered at the strikethrough price on
06-02-2026

$433.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Drive Belt Kit

ES#4920175 - FB0210K - Accessory Drive Belt Kit - For performing preventive maintenance or replacing aging components, the Accessory Drive Belt Kit from ECS Tuning provides the dependable performance. - Ina - BMW

For performing preventive maintenance or replacing aging components, the Accessory Drive Belt Kit from ECS Tuning provides the dependable performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Ina - Corporate Logo
ES#:
4920175
Mfg#:
FB0210K
Back Ordered
Auto Notify
$111.99 USD
Free Shipping
on orders $49 and up
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4642987
Mfg#:
ECSF30N55BPKRKT
Ships in 9 Business Days
Auto Notify
ON SALE!
$520.99

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

$500.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Accessory Belt Tensioner Assembly

ES#3450773 - 11287563927 - Accessory Belt Tensioner Assembly - This is the main belt tensioner for A/C, Alternator, and power steering. - URO - BMW

This is the main belt tensioner for A/C, Alternator, and power steering. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3450773
Mfg#:
11287563927
In Stock
$60.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt - Alternator/AC/Power Steering Belt

ES#2523364 - 11287628661 - Accessory Belt - Alternator/AC/Power Steering Belt - Keep your A/C system operating properly. - Genuine BMW - BMW

Keep your A/C system operating properly. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2523364
Mfg#:
11287628661
Ships in 1-2 days
17% off MSRP

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

$63.99

This product was last offered at the strikethrough price on
06-02-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner Assembly

ES#21777 - 11287563927 - Accessory Belt Tensioner Assembly - This is the main belt tensioner for A/C, Alternator, and power steering. - Genuine BMW - BMW

This is the main belt tensioner for A/C, Alternator, and power steering. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
21777
Mfg#:
11287563927
Ships in 1-2 days
9% 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
06-02-2026

$163.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit

ES#2581872 - OEN54BLTKT - 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2581872
Mfg#:
OEN54BLTKT
Ships in 1-2 days
$364.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - M8x105mm

ES#14586 - 07119904532 - Hex Bolt - M8x105mm - Worn hardware should be replaced before it fails - Genuine BMW - BMW

Worn hardware should be replaced before it fails affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the top of the hydraulic alternator belt tensioner assembly to the bracket

Brand:
Genuine BMW - Corporate Logo
ES#:
14586
Mfg#:
07119904532
In Stock
$7.57 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt

ES#2217419 - 11287628653 - Accessory Belt - Drive belt for the A/C and power steering - Genuine BMW - BMW

Drive belt for the A/C and power steering affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2217419
Mfg#:
11287628653
In Stock
17% off MSRP

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

$63.99

This product was last offered at the strikethrough price on
06-02-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ASA-Bolt - Priced Each

ES#2177575 - 07129906293 - ASA-Bolt - Priced Each - M10X90 - Genuine BMW - BMW

M10X90 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2177575
Mfg#:
07129906293
In Stock
7% off MSRP

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

$9.69

This product was last offered at the strikethrough price on
01-11-2026

$9.03 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

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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