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Audi S4 Engine Pulley Parts

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A/C Condenser

ES#4770467 - 8W0816421H - A/C Condenser - Restore that ice cold A/C! - Nissens - Audi

Restore that ice cold A/C! We Price Match - Give Us A Call or Chat! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Nissens - Corporate Logo
ES#:
4770467
Mfg#:
8W0816421H
Ships in 6 Business Days
$395.99

This product was last offered at the strikethrough price on
12-15-2025

$359.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supercharger Reduction Pulley Upgrade

ES#3220459 - FMSCPS53T - Supercharger Reduction Pulley Upgrade - Contains a Supercharger Reduction Pulley and drive belt for the Audi 3.0T models - Forge - Audi Porsche

Contains a Supercharger Reduction Pulley and drive belt for the Audi 3.0T models affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
3220459
Mfg#:
FMSCPS53T
Ships in 3 Business Days
$346.99 USD
Free Shipping
on orders $49 and up

Alternator Pulley

ES#280992 - 06E903119M - Alternator Pulley - Does not include securing hardware - Genuine Volkswagen Audi - Audi

Does not include securing hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits all up to the 2012 model year. For Bosch style alternators from the 2013 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280992
Mfg#:
06E903119M
Ships in 7 Business 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.

$379.99

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

$346.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Drive Idler Pulley

ES#3627536 - 06M260938J - Accessory Belt Drive Idler Pulley - Replace your worn idler pulley - Genuine Volkswagen Audi - Audi

Replace your worn idler pulley affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3627536
Mfg#:
06M260938J
Ships in 1-2 days
7% off MSRP

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

$121.99

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

$113.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3.0 TFSI Stage II Supercharger Drive Pulley Installation Kit

ES#2209707 - MS100025 - 3.0 TFSI Stage II Supercharger Drive Pulley Installation Kit - Install kit used for APR MS100035 - APR - Audi Volkswagen Porsche

Install kit used for APR MS100035 Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
To be used for APR Supercharger Drive Pulley Upgrade MS100135

Brand:
APR - Corporate Logo
ES#:
2209707
Mfg#:
MS100025
Ships in 5 Business Days
11% off MSRP

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

$374.99

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

$332.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Supercharger Crank Pulley Upgrade (187mm)

ES#3219162 - MS100133 - APR Supercharger Crank Pulley Upgrade (187mm) - Increases diameter of factory pulley from ~162mm to ~187mm, which in turn spins the supercharger ~15.4% faster! - APR - Audi Porsche

Increases diameter of factory pulley from ~162mm to ~187mm, which in turn spins the supercharger ~15.4% faster! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
APR Stage II software is required to run any upgraded Pulley configuration and is sold separately - Pleas

Brand:
APR - Corporate Logo
ES#:
3219162
Mfg#:
MS100133
Ships in 5 Business Days
11% off MSRP

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

$374.99

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

$332.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit

ES#3691276 - 079903133rktKT2 - Accessory Belt Kit - Belt service kit includes belt, tensioner, & hardware to keep your belt where it should be! - Assembled By ECS - Audi

Belt service kit includes belt, tensioner, & hardware to keep your belt where it should be! 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#:
3691276
Mfg#:
079903133RKTKT2
Ships in 1-2 days
$348.99

This product was last offered at the strikethrough price on
01-03-2026

$324.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit

ES#4821047 - 06E903133AEKTKT2 - Accessory Belt Kit - Keep your car from breaking down by replacing your cracked drive belt - Assembled By ECS - Audi

Keep your car from breaking down by replacing your cracked drive 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#:
4821047
Mfg#:
06E903133AEKTKT2
Ships on Sep 2, 2026
Auto Notify
ON SALE! SAVE 29%
$449.99

This product was last offered at the strikethrough price on
12-11-2025

$320.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supercharger Pulley Upgrade Kit

ES#4043098 - CTS-HW-0333 - Supercharger Pulley Upgrade Kit - Software & installation kit not included in this upgrade kit - CTS - Audi

Software & installation kit not included in this upgrade kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*For models with bolt-on style supercharger pulleys - 3.0 TFSI Performance Software is sold separately an

Brand:
CTS - Corporate Logo
ES#:
4043098
Mfg#:
CTS-HW-0333
Ships in 7 Business Days
$159.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Idler Pulley

ES#4057407 - 06E903341G - Accessory Belt Idler Pulley - Also referred to as the 'relay roller' - URO - Audi

Also referred to as the 'relay roller' affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4057407
Mfg#:
06E903341G
Ships in 1 Business Day
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory/Supercharger Belt Kit W/ Tensioners

ES#2678392 - 06E903133RKT2 - Accessory/Supercharger Belt Kit W/ Tensioners - Keep your accessories & supercharger running properly with new tensioners and drive belts - Assembled By ECS - Audi

Keep your accessories & supercharger running properly with new tensioners and drive belts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From the 2013 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678392
Mfg#:
06E903133RKT2
Ships in 2 Business Days
ON SALE!
$314.87

This product was last offered at the strikethrough price on
03-17-2026

$308.21 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fluidampr Overdrive Ring - 187mm

ES#3557475 - 651201cr187KT - Fluidampr Overdrive Ring - 187mm - Includes 1310mm belt for use with 57mm or 63mm supercharger pulleys - iABED Industries - Audi Porsche

Includes 1310mm belt for use with 57mm or 63mm supercharger pulleys affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Only for us with Fluidampr 651201C.

Brand:
iABED Industries - Corporate Logo
ES#:
3557475
Mfg#:
651201CR187KT
Back Ordered
Auto Notify
$305.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt/Serpentine Belt Kit W/ Tensioners

ES#4699378 - 06M903137TKT - Accessory Belt/Serpentine Belt Kit W/ Tensioners - Keep your accessories running properly with new tensions and drive belts - Assembled By ECS - Audi

Keep your accessories running properly with new tensions and drive belts 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#:
4699378
Mfg#:
06M903137TKT
In Stock at Vendor
$157.99

This product was last offered at the strikethrough price on
05-07-2026

$152.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner

ES#3691273 - 079903133R - Accessory Belt Tensioner - Keep your drive belt tight to your accessories. - Litens - Audi

Keep your drive belt tight to your accessories. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Litens - Corporate Logo
ES#:
3691273
Mfg#:
079903133R
Ships in 1-2 days
$306.99

This product was last offered at the strikethrough price on
05-07-2026

$297.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Pulley

ES#3545463 - 078105251L - Crankshaft Pulley - Reduces vibrations and drives the accessory belt - URO - Audi Volkswagen

Reduces vibrations and drives the accessory belt affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3545463
Mfg#:
078105251L
Ships in 1 Business Day
$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

JHM Lightweight Crank Pulley

ES#4045871 - 079105251N - JHM Lightweight Crank Pulley - Counterbalanced like stock pulley for proper engine balancing AND it drops 5 pounds in the process - JH Motorsports - Audi

Counterbalanced like stock pulley for proper engine balancing AND it drops 5 pounds in the process affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JH Motorsports - Corporate Logo
ES#:
4045871
Mfg#:
079105251N
Ships in 10 Business Days
$295.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Pulley Parts

Pulleys drive accessories essential to vehicle operation. Whether you need to install a stock original equipment pulley during a repair, or improve engine performance and appearance with a lightweight aluminum or underdrive pulley, count on ECS Tuning for pulley solutions that work.

Let us help you find the parts that fit your Audi

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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