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BMW 335i Engine Drive Belt Parts

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New Alternator - 180amp

ES#4759696 - 12317558220 - New Alternator - 180amp - Brand new, not remanufactured. No core charge! - Bavarian Autosport - BMW

Brand new, not remanufactured. No core charge! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4759696
Mfg#:
12317558220
In Stock
ON SALE! SAVE 10%
$294.99

This product was last offered at the strikethrough price on
06-30-2026

$265.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Accessory Belt Kit - Kevlar Reinforced

ES#4636403 - 11287568247KBKT - Performance Accessory Belt Kit - Kevlar Reinforced - Utilizes high quality components and our performance Kevlar reinforced belt - Assembled By ECS - BMW
ECS Tuning recommends this product.

Utilizes high quality components and our performance Kevlar reinforced belt 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4636403
Mfg#:
11287568247KBKT
Ships in 1 Business Day
ON SALE! SAVE 23%
$169.99

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

$130.47 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Service Kit

ES#3160979 - 11287628661KT - Accessory Belt Service Kit - Includes belt, tensioner and idler pulley - Assembled By ECS - BMW

Includes belt, tensioner and idler pulley 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3160979
Mfg#:
11287628661KT
In Stock
ON SALE! SAVE 13%
$117.99

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

$102.48 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Accessory Belt Kit - Kevlar Reinforced

ES#4636405 - 11287582946KBKT - Performance Accessory Belt Kit - Kevlar Reinforced - Utilizes high quality components and our performance Kevlar reinforced belt. Includes idlers and tensioner assembly. - Assembled By ECS - BMW

Utilizes high quality components and our performance Kevlar reinforced belt. Includes idlers and tensioner assembly. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4636405
Mfg#:
11287582946KBKT
Ships on Nov 12, 2026
Auto Notify
ON SALE!
$213.45 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

1-Piece, Pinned & Unpinned Crank Hub W/ Crank Bolt Capture Plate - BMW N55, S55

ES#5396556 - 034-113-Z015 - 1-Piece, Pinned & Unpinned Crank Hub W/ Crank Bolt Capture Plate - BMW N55, S55 - Whether your hub needs replaced, or you're looking out for the future of your engine, this motorsport-grade solution is engineered to eliminate slip and protect your engine. - 034Motorsport - BMW

Whether your hub needs replaced, or you're looking out for the future of your engine, this motorsport-grade solution is engineered to eliminate slip and protect your engine. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
5396556
Mfg#:
034-113-Z015
In Stock
ON SALE! SAVE 10%
$819.00

This product was last offered at the strikethrough price on
08-17-2026

$737.10 USD
Free Shipping

Performance Accessory Belt Kit - Kevlar Reinforced

ES#4636406 - 11287628661KBKT - 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 Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4636406
Mfg#:
11287628661KBKT
In Stock
ON SALE! SAVE 23%
$131.99

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

$101.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BMW N54 Accessory Belt Kit

ES#2581868 - N54ACBELTKT - BMW N54 Accessory Belt Kit - Everything you need to service your belt drive system including all high-quality, German-made components - Assembled By ECS - BMW

Everything you need to service your belt drive system including all high-quality, German-made components 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2581868
Mfg#:
N54ACBELTKT
In Stock
ON SALE! SAVE 13%
$224.99

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

$195.06 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BMW N55 Accessory Belt Kit

ES#2713375 - 11287582946KT2 - BMW N55 Accessory Belt Kit - Everything you need to service your belt drive system - featuring all original equipment parts from INA and Continental! - Assembled By ECS - BMW

Everything you need to service your belt drive system - featuring all original equipment parts from INA and Continental! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2713375
Mfg#:
11287582946KT2
Ships in 2 Business Days
ON SALE!
$212.99

This product was last offered at the strikethrough price on
03-19-2026

$206.30 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner Assembly

ES#3131376 - 11287582946 - Accessory Belt Tensioner Assembly - Mechanical belt tensioner for the A/C and power steering system - Ina - BMW
ECS Tuning recommends this product.

Mechanical belt tensioner for the A/C and power steering system We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3131376
Mfg#:
11287582946
Ships in 2 Business Days
$115.71 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner Assembly

ES#4810167 - 11287563927 - Accessory Belt Tensioner Assembly - This is the main belt tensioner for A/C, Alternator, and power steering. - Bremmen Parts - BMW

This is the main belt tensioner for A/C, Alternator, and power steering. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4810167
Mfg#:
11287563927
In Stock
ON SALE! SAVE 17%
$69.99

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

$57.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner Assembly

ES#3134113 - 11288604266 - Accessory Belt Tensioner Assembly - This is the main belt tensioner for A/C, power steering and alternator - Ina - BMW
ECS Tuning recommends this product.

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

Brand:
Ina - Corporate Logo
ES#:
3134113
Mfg#:
11288604266
In Stock
$79.99

This product was last offered at the strikethrough price on
06-08-2026

$60.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner Assembly

ES#4830507 - 11288604266 - Accessory Belt Tensioner Assembly - This is the main belt tensioner for A/C, power steering and alternator - Bremmen Parts - BMW

This is the main belt tensioner for A/C, power steering and alternator 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4830507
Mfg#:
11288604266
In Stock
ON SALE!
$51.99

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

$48.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Belt - N54

ES#4485240 - 7pk1855 - Performance Kevlar Reinforced Belt - N54 - 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 Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4485240
Mfg#:
7PK1855
Ships in 1 Business Day
$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner Assembly

ES#2580613 - 11287563927 - Accessory Belt Tensioner Assembly - This is the main belt tensioner for A/C, Alternator, and power steering. - Ina - BMW
ECS Tuning recommends this product.

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

Brand:
Ina - Corporate Logo
ES#:
2580613
Mfg#:
11287563927
In Stock
$107.99

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

$72.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

N55 "Bulletproof" Crank Kit

ES#4365386 - ECSf30n55bpKT - 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. - 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. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4365386
Mfg#:
ECSF30N55BPKT
Ships on Nov 3, 2026
Auto Notify
ON SALE!
$510.99

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

$482.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Basic Accessory Belt Service Kit

ES#3486401 - 11282457049 - Basic Accessory Belt Service Kit - Includes belt, tensioner and idler pulley - Genuine BMW - BMW

Includes belt, tensioner and idler pulley

Brand:
Genuine BMW - Corporate Logo
ES#:
3486401
Mfg#:
11282457049
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.

$280.99

This product was last offered at the strikethrough price on
09-03-2026

$272.99 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

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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