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Audi S4 Most Popular Parts

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Clutch Kit

ES#1327 - RS4CLUTCHKIT - Clutch Kit - Revive the response & feel of your transmission with an RS4 clutch - Assembled By ECS - Audi Volkswagen

Revive the response & feel of your transmission with an RS4 clutch 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#:
1327
Mfg#:
RS4CLUTCHKIT
In Stock
ON SALE!
$567.99

This product was last offered at the strikethrough price on
05-20-2026

$527.12 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Downpipe For B9 S4/S5

ES#4852347 - UH044-EXA - Performance Downpipe For B9 S4/S5 - Reduce turbo lag and enhance the exhaust note - Unitronic - Audi

Reduce turbo lag and enhance the exhaust note affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Unitronic - Corporate Logo
ES#:
4852347
Mfg#:
UH044-EXA
Ships in 1-3 days
$2634.99 USD
Free Shipping
on orders $49 and up

High Flow Inlet Pipe

ES#4420002 - CTS-HW-380 - High Flow Inlet Pipe - The biggest issue with the restrictive factory inlet is apparent when you start to increase the power. CTS engineers designed the turbo inlet to be as large as possible; yet still fit perfectly. - CTS - Audi

The biggest issue with the restrictive factory inlet is apparent when you start to increase the power. CTS engineers designed the turbo inlet to be as large as possible; yet still fit perfectly. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
4420002
Mfg#:
CTS-HW-380
Back Ordered
Auto Notify
ON SALE! SAVE 15%
$99.99

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

$84.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer And Bolt Kit - 8mm With Black Ball Seat Bolts

ES#2748189 - ECS10612KTWB1 - ECS Wheel Spacer And Bolt Kit - 8mm With Black Ball Seat Bolts - Comes with everything you need to install spacers on two wheels - ECS - Audi Volkswagen

Comes with everything you need to install spacers on two wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Please measure your hub protrusion to ensure it will still make contact with the center of the wheel. See

Brand:
ECS - Corporate Logo
ES#:
2748189
Mfg#:
ECS10612KTWB1
In Stock
ON SALE! SAVE 25%
$134.99

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

$101.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Polyurethane Front Subframe Bushings - Set of Four

ES#4701652 - POW-079 - Polyurethane Front Subframe Bushings - Set of Four - Offers more precise feel and quicker reactions to steering input while eliminating unwanted suspension movement - Verkline - Audi

Offers more precise feel and quicker reactions to steering input while eliminating unwanted suspension movement affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Verkline - Corporate Logo
ES#:
4701652
Mfg#:
POW-079
Ships in 4 Business Days
$239.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

18" Style 803 Wheels - Set Of Four

ES#4771264 - 803-7KT1 - 18" Style 803 Wheels - Set Of Four - 18x9 ET35 5x112 57.1CB - Silver/Machined Lip - Alzor - Audi Volkswagen

18x9 ET35 5x112 57.1CB - Silver/Machined Lip affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Wheel spacers are likely required for front caliper clearance.

Brand:
Alzor - Corporate Logo
ES#:
4771264
Mfg#:
803-7KT1
Ships in 6 Business Days
ON SALE! SAVE 25%
$1166.68

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

$875.01 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Drivetrain Mount Insert Kit

ES#3194637 - 019208ecs01KT1 - Complete Drivetrain Mount Insert Kit - Decrease slop and increase drivetrain rigidity and response! - ECS - Audi

Decrease slop and increase drivetrain rigidity and response! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3194637
Mfg#:
019208ECS01KT1
Ships in 1 Business Day
ON SALE! SAVE 10%
$242.99

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

$218.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Performance Coilover Kit

ES#646 - 29471-2 - Street Performance Coilover Kit - Unrivaled comfort and performance. Average lowering of 1.6"-2.5"F 1.3"-2.0"R - H&R - Audi

Unrivaled comfort and performance. Average lowering of 1.6"-2.5"F 1.3"-2.0"R affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Fits Avant models only

Brand:
H&R - Corporate Logo
ES#:
646
Mfg#:
29471-2
Ships in 3 Business Days
$1310.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Lower Control Arm - Straight - Left

ES#2785095 - 8K0407151F - Front Lower Control Arm - Straight - Left - Keep your suspension in top shape - Meyle HD - Audi

Keep your suspension in top shape affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
From production date 8/16/2011

Brand:
Meyle HD - Corporate Logo
ES#:
2785095
Mfg#:
8K0407151F
In Stock
$166.99

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

$118.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor - 2 Pin

ES#2712775 - 06A919501A - Coolant Temperature Sensor - 2 Pin - Monitors coolant temperature for fan control & gauge readings - Vemo - Audi Volkswagen Porsche

Monitors coolant temperature for fan control & gauge readings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2712775
Mfg#:
06A919501A
In Stock at Vendor
$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

19" BBS XR Wheels - Set Of Four

19x8.5 ET44 5x112 57.1CB - Matte Bronze affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
BBS - Corporate Logo
ES#:
4753494
Mfg#:
XR0203MBZKT
Ships on Jul 7, 2026
$2613.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Lightweight Aluminum Flywheel (23lbs)

ES#2830906 - FW060AL - Lightweight Aluminum Flywheel (23lbs) - Unleash hidden power by reducing rotating mass - Clutch Masters - Audi

Unleash hidden power by reducing rotating mass affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Clutch Masters - Corporate Logo
ES#:
2830906
Mfg#:
FW060AL
Ships in 8 Business Days
15% off MSRP

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

$1534.99

This product was last offered at the strikethrough price on
06-18-2026

$1304.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Main Radiator

ES#4659528 - 8E0121251AB - Main Radiator - Main replacement radiator - Nissens - Audi

Main replacement radiator 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#:
4659528
Mfg#:
8E0121251AB
In Stock
Limited Qty Sale
$361.41

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

$325.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Rotiform AVS Wheels - Set Of Four

ES#4752942 - RF912SX198745KT1 - 19" Rotiform AVS Wheels - Set Of Four - 19X8.5 ET45 5X112 57.1CB - Silver - Rotiform - Audi Volkswagen

19X8.5 ET45 5X112 57.1CB - Silver affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rotiform - Corporate Logo
ES#:
4752942
Mfg#:
RF912SX198745KT1
Back Ordered
$2606.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Driveshaft CV Joint - Priced Each

ES#2870 - 893521100 - Driveshaft CV Joint - Priced Each - Fits the front or rear position of the center propeller shaft (front-to-rear driveshaft) - GKN Drivetech - Audi

Fits the front or rear position of the center propeller shaft (front-to-rear driveshaft) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*Please Note: We recommend visually verifying the CV joint on your factory center driveshaft and spline count/type prior to ordering. GKN lists these as

Brand:
GKN Drivetech - Corporate Logo
ES#:
2870
Mfg#:
893521100
In Stock at Vendor
$170.45

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

$113.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Rohana RFX11 Wheels - Set Of Four

ES#3677028 - fx1119955112KT6 - 19" Rohana RFX11 Wheels - Set Of Four - 19x9.5 ET45 5x112 57.1CB - Brushed Bronze - Rohana Wheels - Audi Volkswagen

19x9.5 ET45 5x112 57.1CB - Brushed Bronze affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rohana Wheels - Corporate Logo
ES#:
3677028
Mfg#:
FX1119955112KT6
Ships on Jul 9, 2026
$2602.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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