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Audi S4 Engine Pulley Parts

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Supercharger Belt Tensioner

ES#2866290 - 06E903133H - Supercharger Belt Tensioner - Keep your supercharger belt tight - Febi - Audi
ECS Tuning recommends this product.

Keep your supercharger belt tight 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Up to production date 7/11/2011

Brand:
Febi - Corporate Logo
ES#:
2866290
Mfg#:
06E903133H
Ships on Oct 16, 2026
$111.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner

ES#1306586 - 078903133AB - Accessory Belt Tensioner - Keep your drive belt tight - Ina - Audi Volkswagen

Keep your drive belt tight We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
1306586
Mfg#:
078903133AB
Ships in 7 Business Days
$72.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Bolt-On - 180mm)

ES#4017699 - CTS-HW-435 - CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Bolt-On - 180mm) - Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output - CTS - Audi Porsche

Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output *NOTE: This kit must be used with appropriate "Stage 2" performance software.

Brand:
CTS - Corporate Logo
ES#:
4017699
Mfg#:
CTS-HW-435
Special Order: No Guaranteed ETA
ON SALE! SAVE 20%
$529.99

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

$423.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Press-on - 180mm)

ES#4017693 - CTS-HW-433 - CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Press-on - 180mm) - Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output - CTS - Audi Porsche

Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output *NOTE: This kit must be used with appropriate "Stage 2" performance software.

Brand:
CTS - Corporate Logo
ES#:
4017693
Mfg#:
CTS-HW-433
Special Order: No Guaranteed ETA
ON SALE! SAVE 20%
$529.99

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

$423.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Socket Head Collared Screw - Priced Each

ES#471966 - N91128701 - Socket Head Collared Screw - Priced Each - Install new hardware with your new parts. M8x32 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M8x32 Secures accessory belt tensioner - Two required

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471966
Mfg#:
N91128701
In Stock
43% off MSRP

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

$6.96

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

$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi 3.0T Performance Overdrive Crank Pulley With Belt - 187.3mm - For Use With Supercharger Pulley Upgrade

ES#4056962 - 025510ecs01KT - Audi 3.0T Performance Overdrive Crank Pulley With Belt - 187.3mm - For Use With Supercharger Pulley Upgrade - Spin the supercharger faster without affecting the accessory drive system - ECS - Audi Volkswagen Porsche

Spin the supercharger faster without affecting the accessory drive system 10X Entries For Our 25th Anniversary Sweepstakes!
Appropriate stage 2 software is required for use

Brand:
ECS - Corporate Logo
ES#:
4056962
Mfg#:
025510ECS01KT
In Stock at Vendor
$391.98

This product was last offered at the strikethrough price on
06-10-2026

$383.87 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Serpentine Belt

ES#4699371 - 06M903137T - Serpentine Belt - Replace your worn belt today before it breaks - Bando - Audi

Replace your worn belt today before it breaks

Brand:
Bando - Corporate Logo
ES#:
4699371
Mfg#:
06M903137T
Back Ordered
$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit W/ Tensioner

ES#2678391 - 06E903137TKT - Accessory Belt Kit W/ Tensioner - Keep your accessories running properly with a new tensioner and drive belt - Genuine Volkswagen Audi - Audi

Keep your accessories running properly with a new tensioner and drive belt From the 2013 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2678391
Mfg#:
06E903137TKT
Ships in 3 Business Days
$371.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit W/ Tensioner

ES#2678390 - 06E903137QKT - Accessory Belt Kit W/ Tensioner - Keep your accessories running properly with a new tensioner and drive belt - Genuine Volkswagen Audi - Audi

Keep your accessories running properly with a new tensioner and drive belt Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2678390
Mfg#:
06E903137QKT
Ships in 4 Business Days
$368.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Drive Idler Pulley With Bolt

ES#3181976 - 06M903341D - Accessory Belt Drive Idler Pulley With Bolt - Replace your worn idler pulley - Genuine Volkswagen Audi - Audi

Replace your worn idler pulley

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3181976
Mfg#:
06M903341D
Ships in 3 Business Days
6% off MSRP

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

$130.00

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

$121.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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!

Brand:
Nissens - Corporate Logo
ES#:
4770467
Mfg#:
8W0816421H
Ships in 6 Business Days
$359.99 USD
Free Shipping
on orders $49 and up
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' 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4057407
Mfg#:
06E903341G
In Stock
$19.99 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! 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.

$393.99

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

$349.99 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! 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.

$393.99

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

$349.99 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

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

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