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Audi S4 Most Popular Parts

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High Pressure Fuel Pump Piston Upgrade Kit

ES#4475572 - 034-106-6052 - High Pressure Fuel Pump Piston Upgrade Kit - Yields up to 50% Flow Increase Over the Factory High Pressure Fuel Pump! - 034Motorsport - Audi

Yields up to 50% Flow Increase Over the Factory High Pressure Fuel Pump!

Brand:
034Motorsport - Corporate Logo
ES#:
4475572
Mfg#:
034-106-6052
In Stock
$390.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Top Tec 1800 Automatic Transmission Fluid - 20 Liters

ES#4375742 - 20034 - Top Tec 1800 Automatic Transmission Fluid - 20 Liters - Fully synthetic leading-edge, high-performance automatic transmission fluid - Liqui-Moly - Audi BMW Volkswagen

Fully synthetic leading-edge, high-performance automatic transmission fluid 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
4375742
Mfg#:
20034
In Stock
36% off MSRP

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

$320.99

This product was last offered at the strikethrough price on
07-22-2026

$206.99 USD

Vent Hose

ES#3561980 - 06M103210EB - Vent Hose - Restores the proper flow of crankcase gases, keeping your intake valves cleaner and your emissions systems happy - Genuine Volkswagen Audi - Audi

Restores the proper flow of crankcase gases, keeping your intake valves cleaner and your emissions systems happy

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3561980
Mfg#:
06M103210EB
In Stock
15% off MSRP

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

$170.00

This product was last offered at the strikethrough price on
07-22-2026

$144.84 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3.0T 207mm Supercharger Crank Pulley Upgrade Kit

ES#4883431 - 053844la01KT - 3.0T 207mm Supercharger Crank Pulley Upgrade Kit - "Dual pulley" gains without the hassle! Easily increase supercharger RPM by 22% and support up to 550HP. - ECS - Audi Volkswagen Porsche

"Dual pulley" gains without the hassle! Easily increase supercharger RPM by 22% and support up to 550HP. 10X Entries For Our 25th Anniversary Sweepstakes!
For use with OEM (63.25mm) Supercharger Pulley.
"Stage 2" Software Required for Compatibility

Brand:
ECS - Corporate Logo
ES#:
4883431
Mfg#:
053844LA01KT
In Stock
ON SALE! SAVE 20%
$419.99

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

$335.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Tune2Air Bovee Plug-And-Play Bluetooth Adapter

ES#3426489 - WMA3000A - Tune2Air Bovee Plug-And-Play Bluetooth Adapter - Allows for the wireless streaming of music from your iPhone, iPad, iPod, and most Android/Windows devices - Tune2Air - Audi Volkswagen

Allows for the wireless streaming of music from your iPhone, iPad, iPod, and most Android/Windows devices For models with factory AMI (Audi Music Interface), MDI (VW Media-In Multimedia Port), and MMI (Mercedes Media Interface) ports

Brand:
Tune2Air - Corporate Logo
ES#:
3426489
Mfg#:
WMA3000A
In Stock
$89.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sachs Performance XTend Clutch Kit

ES#3449340 - 3000 950 918 - Sachs Performance XTend Clutch Kit - Featuring Sachs Xtend pressure plate, full-face clutch disc, and throw-out bearing - Sachs - Audi
ECS Tuning recommends this product.

Featuring Sachs Xtend pressure plate, full-face clutch disc, and throw-out bearing We Price Match - Give Us A Call or Chat!

Brand:
Sachs - Corporate Logo
ES#:
3449340
Mfg#:
3000 950 918
In Stock
$749.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Splitter Style - Gloss Black

ES#4158342 - 025864ecs01aKT - Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Splitter Style - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles from the 2013 model year (Facelift)

Brand:
ECS - Corporate Logo
ES#:
4158342
Mfg#:
025864ECS01AKT
In Stock
ON SALE! SAVE 25%
$359.99

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

$269.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Street Shield Aluminum Skid Plate Kit

ES#2771379 - 003251ECS01AKTKT - ECS Tuning Street Shield Aluminum Skid Plate Kit - Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8 chassis A4/S4/A5/S5 models up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
2771379
Mfg#:
003251ECS01AKTKT
In Stock
ON SALE! SAVE 10%
$416.99

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

$375.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 Luft-Technik Intercooler and Charge Pipe Kit

ES#3639384 - 023880ecs01akt1 - Audi B9 S4 Luft-Technik Intercooler and Charge Pipe Kit - Full kit to upgrade your charge pipes and front mount intercooler - ECS - Audi

Full kit to upgrade your charge pipes and front mount intercooler 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3639384
Mfg#:
023880ECS01AKT1
Ships on Oct 12, 2026
Auto Notify
ON SALE! SAVE 15%
$1019.99

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

$866.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front RedStuff Performance Brake Pad Set

ES#4031309 - DP32277C - Front RedStuff Performance Brake Pad Set - High performance street pad featuring Kevlar technology. - EBC - Audi

High performance street pad featuring Kevlar technology. 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
EBC - Corporate Logo
ES#:
4031309
Mfg#:
DP32277C
In Stock
$203.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump And Thermostat Kit

ES#4820333 - 06E121111ALKT7KT - Water Pump And Thermostat Kit - Replace your thermostat and temp sensor with one kit! - Assembled By ECS - Audi

Replace your thermostat and temp sensor with one kit! 10X Entries For Our 25th Anniversary Sweepstakes!
Fits from the 2013 model year (facelift)

Brand:
Assembled By ECS - Corporate Logo
ES#:
4820333
Mfg#:
06E121111ALKT7KT
In Stock
ON SALE! SAVE 22%
$419.99

This product was last offered at the strikethrough price on
06-22-2026

$327.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Motul Gear 300 Manual Transmission / Differential Fluid (75w-90) - 1 Liter

ES#261741 - 317811 - Motul Gear 300 Manual Transmission / Differential Fluid (75w-90) - 1 Liter - Fully synthetic GL-4 / GL-5 gear oil, designed for high performance use - Motul - Audi BMW Volkswagen MINI Porsche

Fully synthetic GL-4 / GL-5 gear oil, designed for high performance use

Brand:
Motul - Corporate Logo
ES#:
261741
Mfg#:
317811
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.

$37.85

This product was last offered at the strikethrough price on
07-22-2026

$34.06 USD
Free Shipping
on orders $49 and up

D1S 6500K XB Xenon Bulb - Pair

ES#4212776 - MM.N.074 - D1S 6500K XB Xenon Bulb - Pair - Quality replacement xenon bulbs from Morimoto - Morimoto - Audi BMW Volkswagen Mercedes Benz MINI

Quality replacement xenon bulbs from Morimoto

Brand:
Morimoto - Corporate Logo
ES#:
4212776
Mfg#:
MM.N.074
In Stock
$89.04 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wheel Bearing - Priced Each

ES#2731848 - 4H0498625A - Wheel Bearing - Priced Each - Fits the left and right side. Includes new hardware. - FAG - Audi Porsche

Fits the left and right side. Includes new hardware.

Brand:
FAG - Corporate Logo
ES#:
2731848
Mfg#:
4H0498625A
In Stock
$150.99

This product was last offered at the strikethrough price on
06-04-2026

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

Liqui Moly Top Tec - Oil Service Kit (0w-20)

ES#4659470 - 202361KT - Liqui Moly Top Tec - Oil Service Kit (0w-20) - Includes LiquiMoly Top Tec 6200 508.00/509.00 0W20 oil, Genuine Audi Filter, drain plug, and washer for a complete oil service - Assembled By ECS - Audi

Includes LiquiMoly Top Tec 6200 508.00/509.00 0W20 oil, Genuine Audi Filter, drain plug, and washer for a complete oil service 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4659470
Mfg#:
202361KT
In Stock
$128.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

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