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BMW E90 335i N54 3.0L

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BMW E90 335i N54 3.0L 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 For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4759696
Mfg#:
12317558220
Ships in 4 Business Days
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 For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4636403
Mfg#:
11287568247KBKT
Ships in 8 Business Days
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

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 For Our 25th Anniversary 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

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 For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4485240
Mfg#:
7PK1855
Ships in 8 Business Days
$41.99 USD
Free Shipping
on orders $49 and up
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 For Our 25th Anniversary 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#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

Schwaben BMW Belt Tensioner Tool

ES#3136158 - 020023SCH01A - Schwaben BMW Belt Tensioner Tool - Much easier than using a T60 Torx socket! A must have for belt service on N54/N55 engines. - Schwaben - BMW
ECS Tuning recommends this product.

Much easier than using a T60 Torx socket! A must have for belt service on N54/N55 engines. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
3136158
Mfg#:
020023SCH01A
In Stock
ON SALE! SAVE 25%
$67.99

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

$50.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

N54 "Bulletproof" Crank Kit

ES#4642990 - ECSN54BPKRKT - 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. Featuring Kevlar reinforced belt! - 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. Featuring Kevlar reinforced belt! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4642990
Mfg#:
ECSN54BPKRKT
Ships in 8 Business Days
ON SALE!
$574.99

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

$541.18 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Accessory Belt

ES#2562556 - 11287568247 - Accessory Belt - Drives power steering pump, alternator and A/C compressor - Continental - BMW
ECS Tuning recommends this product.

Drives power steering pump, alternator and A/C compressor We Price Match - Give Us A Call or Chat!

Brand:
Continental - Corporate Logo
ES#:
2562556
Mfg#:
11287568247
Back Ordered
$36.44

This product was last offered at the strikethrough price on
04-28-2026

$33.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

N54 AC Delete Kit

ES#4045332 - n54acdltKT - N54 AC Delete Kit - Includes new idler pulley and shorter belt for deleting your AC compressor - Assembled By ECS - BMW

Includes new idler pulley and shorter belt for deleting your AC compressor 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4045332
Mfg#:
N54ACDLTKT
In Stock
ON SALE! SAVE 18%
$78.99

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

$64.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt

ES#2228184 - 11287628652 - Accessory Belt - Drives power steering pump, alternator and A/C compressor - Genuine BMW - BMW

Drives power steering pump, alternator and A/C compressor

Brand:
Genuine BMW - Corporate Logo
ES#:
2228184
Mfg#:
11287628652
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.

$63.99

This product was last offered at the strikethrough price on
07-21-2026

$58.99 USD
Free Shipping
on orders $49 and up
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

Upper Idler Pulley

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

The higher idler pulley 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4759442
Mfg#:
11287556251
In Stock
ON SALE! SAVE 25%
$31.99

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

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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. 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

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. 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

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. 10X Entries For Our 25th Anniversary Sweepstakes!

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

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

$576.18 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial 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.

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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