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Audi S4 Most Popular Parts

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Rear Suspension Install Kit

ES#2762728 - 4F0513353DKT2 - Rear Suspension Install Kit - All hardware and mounts necessary to install new suspension - Assembled By ECS - Audi

All hardware and mounts necessary to install new suspension 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#:
2762728
Mfg#:
4F0513353DKT2
In Stock
$218.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

4.2 Performance Ignition Service Kit

ES#5338616 - 056059LA078ISKT - 4.2 Performance Ignition Service Kit - Featuring ECS Performance Ignition Coils & OEM Bosch spark plugs for increased spark energy! - ECS - Audi

Featuring ECS Performance Ignition Coils & OEM Bosch spark plugs for increased spark energy! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
5338616
Mfg#:
056059LA078ISKT
Ships on Aug 4, 2026
Auto Notify
ON SALE! SAVE 25%
$400.99

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

$300.62 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Flywheel Bolt - Priced Each

ES#2151 - N90705901 - Flywheel Bolt - Priced Each - Secures the flywheel to crankshaft. M10x1x43 - Genuine Volkswagen Audi - Audi Volkswagen

Secures the flywheel to crankshaft. M10x1x43 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2151
Mfg#:
N90705901
In Stock
32% off MSRP

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

$14.42

This product was last offered at the strikethrough price on
06-19-2026

$9.77 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RS+ Injector Upgrade Kit - EA839 3.0T/2.9T

ES#5374600 - 034-106-3044 - RS+ Injector Upgrade Kit - EA839 3.0T/2.9T - Safely provides a 67% increase in flow over EA839 3.0T and 31% increase over EA839 2.9T/EA825 4.0T RS Injectors! - 034Motorsport - Audi

Safely provides a 67% increase in flow over EA839 3.0T and 31% increase over EA839 2.9T/EA825 4.0T RS Injectors! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Must Run a 034Motorsport Stage 3 File Specifically for These Injectors

Brand:
034Motorsport - Corporate Logo
ES#:
5374600
Mfg#:
034-106-3044
In Stock
$2400.00 USD
Free Shipping

19" Rohana RFX10 Wheels - Set Of Four

ES#4810046 - FX119512BZ45KT - 19" Rohana RFX10 Wheels - Set Of Four - 19x9.5 ET45 5x112 66.6CB - Brushed Bronze - Rohana Wheels - Audi Mercedes Benz

19x9.5 ET45 5x112 66.6CB - Brushed Bronze affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rohana Wheels - Corporate Logo
ES#:
4810046
Mfg#:
FX119512BZ45KT
Ships on Jul 10, 2026
$2400.00 USD
This product is lifetime replacement eligible Lifetime Replacement

20" V-FF 105 Style Wheels - Set Of Four

ES#3420817 - 10520gmb8s5KT - 20" V-FF 105 Style Wheels - Set Of Four - 20"x10", ET30, 66.56CB, 5x112 - Carbon Graphite Finish (Deep Profile) - Vorsteiner - Audi

20"x10", ET30, 66.56CB, 5x112 - Carbon Graphite Finish (Deep Profile) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vorsteiner - Corporate Logo
ES#:
3420817
Mfg#:
10520GMB8S5KT
Ships on Aug 25, 2026
$2400.00 USD
This product is lifetime replacement eligible Lifetime Replacement

20" V-FF 107 Style Wheels - Set Of Four

20"x10", 5x112, et30, 66.56CB - Carbon Graphite Finish affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vorsteiner - Corporate Logo
ES#:
3449254
Mfg#:
10720100.5112KT4
Ships on Aug 25, 2026
$2400.00 USD
This product is lifetime replacement eligible Lifetime Replacement

20" V-FF 103 Style Wheels - Set Of Four

ES#3075994 - 10320GMB8S5Fkt - 20" V-FF 103 Style Wheels - Set Of Four - 20"x10" ET30 66.6CB 5x112 Carbon Graphite - Vorsteiner - Audi

20"x10" ET30 66.6CB 5x112 Carbon Graphite affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vorsteiner - Corporate Logo
ES#:
3075994
Mfg#:
10320GMB8S5FKT
Back Ordered
$2400.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/8.5 S4 3.0T Valved Cat Back Exhaust & Kohlefaser Luft-Technik Intake System

ES#4751087 - 008553ECS03EB2KT - Audi B8/8.5 S4 3.0T Valved Cat Back Exhaust & Kohlefaser Luft-Technik Intake System - Enhance the sound and performance of your S4 with an ECS Tuning cat-back and a Kohlefaser Luft-Technik Intake System - Enthusiast Bundles - Audi

Enhance the sound and performance of your S4 with an ECS Tuning cat-back and a Kohlefaser Luft-Technik Intake System Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751087
Mfg#:
008553ECS03EB2KT
Ships on Jan 19, 2027
ON SALE! SAVE 28%
$3351.75

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

$2399.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cup Kit - H&R Sport Springs With Bilstein Sport Shocks

ES#2739504 - 50361KT - Cup Kit - H&R Sport Springs With Bilstein Sport Shocks - Perfect combination of handling & ride quality - Assembled By ECS - Audi

Perfect combination of handling & ride quality 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#:
2739504
Mfg#:
50361KT
Ships on Sep 18, 2026
Auto Notify
$1395.99

This product was last offered at the strikethrough price on
05-22-2026

$1199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Valvetrain Kit

ES#1905571 - SPRK-Audi27t - Performance Valvetrain Kit - Includes springs, retainers, and valve seats - Supertech - Audi

Includes springs, retainers, and valve seats affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
1905571
Mfg#:
SPRK-AUDI27T
Ships in 6 Business Days
$799.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Driveshaft Center Support Bearing Carrier Upgrade

Holds the driveshaft where it should be. Isolation dampers minimize vibrations. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JXB Performance - Corporate Logo
ES#:
4500252
Mfg#:
B9JXBPDK
In Stock at Vendor
Starting at $299.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upper Timing Chain Tensioner - Left

ES#5339362 - 06E109217AM - Upper Timing Chain Tensioner - Left - Applies tension to the upper left timing chain - Ina - Audi

Applies tension to the upper left timing chain affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From the 2013 model year

Brand:
Ina - Corporate Logo
ES#:
5339362
Mfg#:
06E109217AM
In Stock
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Engine oil Dipstick - black Anodized

ES#2960435 - 005259ECS01-02 - Billet Engine oil Dipstick - black Anodized - A more durable and aesthetically pleasing addition to your engine bay - ECS - Audi

A more durable and aesthetically pleasing addition to your engine bay affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
2960435
Mfg#:
005259ECS01-02
In Stock
ON SALE! SAVE 25%
$99.99

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

$74.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B6 Performance DampTronic Front Strut - Priced Each

ES#4390655 - 26-296036 - B6 Performance DampTronic Front Strut - Priced Each - Unbelievable control, precise handling, ultimate performance and incredible comfort. German-made with world-famous Bilstein quality and a limited lifetime warranty! A heavy duty upgrade for the performance minded driver. - Bilstein - Audi

Unbelievable control, precise handling, ultimate performance and incredible comfort. German-made with world-famous Bilstein quality and a limited lifetime warranty! A heavy duty upgrade for the performance minded driver. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with factory electronic dampening control
For vehicles with electronic suspension (49mm diameter strut)

Brand:
Bilstein - Corporate Logo
ES#:
4390655
Mfg#:
26-296036
In Stock
33% off MSRP

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

$713.00

This product was last offered at the strikethrough price on
06-19-2026

$479.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Polyurethane Full Rear Bushing Kit - Red (Street)

ES#4701594 - POW-007-75 - Polyurethane Full Rear Bushing Kit - Red (Street) - Complete rear set of poly bushings for all rear control arms on cars with steel upper arms - Verkline - Audi

Complete rear set of poly bushings for all rear control arms on cars with steel upper arms affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with stamped steel rear upper control arms only

Brand:
Verkline - Corporate Logo
ES#:
4701594
Mfg#:
POW-007-75
Ships in 2 Business Days
$479.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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