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Audi S4 Most Popular Parts

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High Performance B5 S4 All Aluminum Radiator

ES#3220600 - 7071 - High Performance B5 S4 All Aluminum Radiator - Great option if youre looking to modify, upgrade, or simply keep up with the maintenance - CSF - Audi

Great option if you’re looking to modify, upgrade, or simply keep up with the maintenance 2X Entries Into Our F80 M3 Sweepstakes
Fits manual transmission models only

Brand:
CSF - Corporate Logo
ES#:
3220600
Mfg#:
7071
In Stock
$559.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Purge Control Valve Solenoid Valve

ES#3693642 - 06M133240CG - Purge Control Valve Solenoid Valve - Rear most purge Valve and line with T fitting that connects to the turbo and non-return-valve - Genuine Volkswagen Audi - Audi

Rear most purge Valve and line with T fitting that connects to the turbo and non-return-valve

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3693642
Mfg#:
06M133240CG
In Stock
2% off MSRP

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

$158.99

This product was last offered at the strikethrough price on
10-21-2026

$155.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5

ES#3411932 - 024564ECS01 - Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5 - With Lane Change Assist - ECS - Audi

With Lane Change Assist 10X Entries Into Our F80 M3 Sweepstakes

For vehicles with lane change assist

Brand:
ECS - Corporate Logo
ES#:
3411932
Mfg#:
024564ECS01
In Stock
ON SALE! SAVE 20%
$413.99

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

$331.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" Style 698 - Set Of Four

ES#4314833 - 698-1KT - 18" Style 698 - Set Of Four - 18"x8" ET45 5x112 - Gloss Black - Alzor - Audi Volkswagen

18"x8" ET45 5x112 - Gloss Black 10X Entries Into Our F80 M3 Sweepstakes
Wheel spacers may be necessary for front caliper clearance

Brand:
Alzor - Corporate Logo
ES#:
4314833
Mfg#:
698-1KT
In Stock
ON SALE! SAVE 24%
$1166.99

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

$881.97 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8 3.0T Stage 2 Performance Clutch Kit & Lightweight Flywheel & Drivetrain Mount Insert Kit

ES#4876408 - 048470LAEBKT - B8 3.0T Stage 2 Performance Clutch Kit & Lightweight Flywheel & Drivetrain Mount Insert Kit - Receive discounted Drivetrain Mount Inserts with your purchase of a Stage 2 Clutch & Lightweight Flywheel kit! - Enthusiast Bundles - Audi

Receive discounted Drivetrain Mount Inserts with your purchase of a Stage 2 Clutch & Lightweight Flywheel kit! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4876408
Mfg#:
048470LAEBKT
In Stock
ON SALE! SAVE 28%
$2897.46

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

$2098.92 USD
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#4759993 - 06E121111AL - Thermostat - Includes sealing gasket and housing - Bremmen Parts - Audi Volkswagen

Includes sealing gasket and housing 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4759993
Mfg#:
06E121111AL
In Stock
ON SALE! SAVE 12%
$50.99

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

$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DR Series Wheel Spacers - 15mm (1 Pair) Black

ES#2730959 - 3055665SW - DR Series Wheel Spacers - 15mm (1 Pair) Black - Get a new set of spacers and widen the stance of your vehicle - H&R - Audi Mercedes Benz Porsche

Get a new set of spacers and widen the stance of your vehicle We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
2730959
Mfg#:
3055665SW
In Stock
10% off MSRP

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

$119.99

This product was last offered at the strikethrough price on
05-12-2026

$107.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B5 S4 Valved or Non-Valved Cat Back Exhaust

ES#4698873 - 041750LA - B5 S4 Valved or Non-Valved Cat Back Exhaust - Experience your driving passion with our ECS Exhaust System! - ECS - Audi

Experience your driving passion with our ECS Exhaust System! 10X Entries Into Our F80 M3 Sweepstakes
Fits both Sedan and Avant

Brand:
ECS - Corporate Logo
ES#:
4698873
Mfg#:
041750LA
In Stock
ON SALE!
Starting at $498.14 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Dynamic+ StreetSport Front Brake Pad Set

ES#4845282 - 034-302-0026 - 034Motorsport Dynamic+ StreetSport Front Brake Pad Set - Semi-metallic pads that offer low dust and noise for comfortable everyday use, while delivering high friction, superior modulation, and exceptional stopping power! - 034Motorsport - Audi

Semi-metallic pads that offer low dust and noise for comfortable everyday use, while delivering high friction, superior modulation, and exceptional stopping power! 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4845282
Mfg#:
034-302-0026
In Stock
$387.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

66.6-57.1 Hub Centric Rings - Set Of Four

ES#2185353 - AP666571 - 66.6-57.1 Hub Centric Rings - Set Of Four - Plastic 66.6mm to 57.1mm hub centric rings for proper wheel fitment - ECS - Audi BMW Volkswagen

Plastic 66.6mm to 57.1mm hub centric rings for proper wheel fitment 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2185353
Mfg#:
AP666571
In Stock
ON SALE! SAVE 20%
$30.99

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

$24.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

18" Style 628 Wheels - Set Of Four

ES#2143327 - 628-1 - 18" Style 628 Wheels - Set Of Four - 18"x8" ET35 66.6CB 5x112 Gunmetal / Machined Face - Alzor - Audi

18"x8" ET35 66.6CB 5x112 Gunmetal / Machined Face 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Alzor - Corporate Logo
ES#:
2143327
Mfg#:
628-1
In Stock
ON SALE! SAVE 31%
$1166.99

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

$799.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Dual Pulley Hardware Kit -190mm

ES#4858461 - 034-145-Z047 - Dual Pulley Hardware Kit -190mm - Increase supercharger rotational speed to provide more boost to your engine. - 034Motorsport - Audi

Increase supercharger rotational speed to provide more boost to your engine. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4858461
Mfg#:
034-145-Z047
In Stock
$692.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Hub - Priced Each

ES#4818110 - 8K0407613B - Wheel Hub - Priced Each - Does not include wheel bearing - Bremmen Parts - Audi

Does not include wheel bearing 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818110
Mfg#:
8K0407613B
Ships on Dec 28, 2026
ON SALE! SAVE 22%
$87.99

This product was last offered at the strikethrough price on
10-04-2026

$68.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front & Rear Exact-Fit Stainless Steel Brake Lines - Kit

ES#1899278 - ecs41016/63 - Front & Rear Exact-Fit Stainless Steel Brake Lines - Kit - Complete set of DOT-compliant lines for an improved pedal feel - ECS - Audi
ECS Tuning recommends this product.

Complete set of DOT-compliant lines for an improved pedal feel 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
1899278
Mfg#:
ECS41016/63
In Stock
ON SALE!
$216.98

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

$206.13 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Supply

ES#4845326 - 06E121045BB - Coolant Pipe - Supply - Main supply pipe that connects to the upper radiator hose and the engine - URO - Audi

Main supply pipe that connects to the upper radiator hose and the engine 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
From the 2013 model year

Brand:
URO - Corporate Logo
ES#:
4845326
Mfg#:
06E121045BB
In Stock
$90.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Endurance Series AGM Battery- B49-H8-L5

ES#3617596 - B10049 - Endurance Series AGM Battery- B49-H8-L5 - Designed for a wide range of demanding, high performance applications, this battery is reliable, long-lasting, and engineered for high shock and vibration applications. - Braille - Audi BMW

Designed for a wide range of demanding, high performance applications, this battery is reliable, long-lasting, and engineered for high shock and vibration applications. This item is classified as Hazardous Materials and requires special shipping and handling. We cannot ship this item out of the US or with priority shipping

Brand:
Braille - Corporate Logo
ES#:
3617596
Mfg#:
B10049
In Stock
$446.99 USD
This product is lifetime replacement eligible Lifetime Replacement

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