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Audi A4 Performance Pulleys

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Harmonic Damper Crankshaft Pulley

ES#2966553 - 551231 - Harmonic Damper Crankshaft Pulley - Provides broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability - Fluidampr - Audi Volkswagen

Provides broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability

Brand:
Fluidampr - Corporate Logo
ES#:
2966553
Mfg#:
551231
In Stock
$517.60 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Harmonic Damper Crankshaft Pulley

ES#2784492 - 551201 - Harmonic Damper Crankshaft Pulley - Internally balanced harmonic damper - Fluidampr - Audi Volkswagen

Internally balanced harmonic damper

Brand:
Fluidampr - Corporate Logo
ES#:
2784492
Mfg#:
551201
In Stock at Vendor
$501.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lightweight Underdrive Crank Pulley Kit - Silver

ES#6140 - 06F198002SLV - Lightweight Underdrive Crank Pulley Kit - Silver - Bolt on way to reclaim lost horsepower - ECS - Audi

Bolt on way to reclaim lost horsepower 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
6140
Mfg#:
06F198002SLV
In Stock
ON SALE! SAVE 10%
$194.99

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

$175.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Accessory Belt - Alternator

ES#3677911 - 06B903137E - Performance Kevlar Reinforced Accessory Belt - Alternator - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - Audi Volkswagen
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#:
3677911
Mfg#:
06B903137E
Ships on Oct 27, 2026
Auto Notify
$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Lightweight Crank Pulley - Black

ES#3184669 - 002480ECS01 - ECS Lightweight Crank Pulley - Black - Less rotational mass means more power - ECS - Audi Volkswagen

Less rotational mass means more power 10X Entries For Our 25th Anniversary Sweepstakes!

Engine codes AEB & ATW

Brand:
ECS - Corporate Logo
ES#:
3184669
Mfg#:
002480ECS01
In Stock
ON SALE! SAVE 29%
$166.99

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

$119.23 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Accessory Belt

ES#3677913 - 06B903137D - Performance Kevlar Reinforced Accessory Belt - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - Audi
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!

Up to VIN 8E-4-191000, split is in the 2004 model year

Brand:
ECS - Corporate Logo
ES#:
3677913
Mfg#:
06B903137D
Ships in 8 Business Days
Auto Notify
$50.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Harmonic Damper Crankshaft Pulley

ES#3557367 - 551201_AEB - Harmonic Damper Crankshaft Pulley - Provides broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability - Fluidampr - Audi Volkswagen

Provides broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability This is a custom product and requires 2-3 week lead time to manufacture due to the zinc plating process.
Engine codes AEB & ATW

Brand:
Fluidampr - Corporate Logo
ES#:
3557367
Mfg#:
551201_AEB
Back Ordered
Auto Notify
$569.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lightweight Crank Pulley with Hardware

ES#2966353 - 002480ECS01BKT - Lightweight Crank Pulley with Hardware - Less rotational mass means more power - Assembled By ECS - Audi

Less rotational mass means more power 10X Entries For Our 25th Anniversary Sweepstakes!
Engine codes AEB & ATW

Brand:
Assembled By ECS - Corporate Logo
ES#:
2966353
Mfg#:
002480ECS01BKT
In Stock
$101.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Underdrive Lightweight Crank Pulley

ES#2848047 - CTS-HW-0099-B8 - Underdrive Lightweight Crank Pulley - Less rotational mass means more power! - CTS - Audi

Less rotational mass means more power! For vehicles with hydraulic power steering

Brand:
CTS - Corporate Logo
ES#:
2848047
Mfg#:
CTS-HW-0099-B8
Ships in 8 Business Days
ON SALE! SAVE 20%
$199.99

This product was last offered at the strikethrough price on
07-10-2026

$159.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lightweight Underdrive Crank Pulley Kit - Black

ES#6141 - 06F198002blk - Lightweight Underdrive Crank Pulley Kit - Black - Bolt on way to reclaim lost horsepower - ECS - Audi

Bolt on way to reclaim lost horsepower 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
6141
Mfg#:
06F198002BLK
In Stock
ON SALE! SAVE 25%
$240.99

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

$180.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Power Pulley Kit

5 - 7 horsepower gain 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Neuspeed - Corporate Logo
ES#:
3085848
Mfg#:
62.02.68
Ships in 2 Business Days
$309.00 USD

Lightweight Crank Pulley Kit

ES#2862936 - CTS-HW-0090-B7 - Lightweight Crank Pulley Kit - Faster revving and more horsepower for your Audi - CTS - Audi

Faster revving and more horsepower for your Audi

Brand:
CTS - Corporate Logo
ES#:
2862936
Mfg#:
CTS-HW-0090-B7
Ships in 8 Business Days
ON SALE! SAVE 20%
$179.99

This product was last offered at the strikethrough price on
07-10-2026

$143.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Accessory Belt - A/C Compressor

ES#3677910 - 06B260849A - Performance Kevlar Reinforced Accessory Belt - A/C Compressor - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - Audi BMW Volkswagen
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#:
3677910
Mfg#:
06B260849A
In Stock
Limited Qty Sale
$25.99

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

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Replacement Accessory Belt

ES#3176659 - CTSHW0099B8Belt - Replacement Accessory Belt - For use with your CTS Lightweight Pulley - CTS - Audi

For use with your CTS Lightweight Pulley For use with CTS Pulley CTS-HW-0099-B8 with hydraulic steering

Brand:
CTS - Corporate Logo
ES#:
3176659
Mfg#:
CTSHW0099B8BELT
Ships in 8 Business Days
$19.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Pulleys

Underdrive pulleys help reduce the amount of power your engine has to devote to accessories like your alternator or a/c compressor. Unlock extra power with performance underdrive pulleys and lightweight pulley options to reduce rotating mass.

Let us help you find the parts that fit your Audi

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

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