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Audi S4 Most Popular Parts

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ES#4782919 - 06M129041KT2 - Ultimate Oil Separator/Pressure Control Valve (PCV) Service Kit - Comprehensive kit includes the PCV, Breather lines, and all required hardware - Assembled By ECS - Audi

Comprehensive kit includes the PCV, Breather lines, and all required hardware 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#:
4782919
Mfg#:
06M129041KT2
In Stock
ON SALE!
$303.99

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

$291.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
ES#4620271 - VWR131000 - RacingLine Oil Catch Can System - B9 S4/S5/SQ5 - Features a complete PCV replacement block feeding to an internally-baffled can to eliminate oil-build-up in the intercooler and inlet tract - Racingline - Audi

Features a complete PCV replacement block feeding to an internally-baffled can to eliminate oil-build-up in the intercooler and inlet tract affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Racingline - Corporate Logo
ES#:
4620271
Mfg#:
VWR131000
Ships in 1 Business Day
$1117.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4033242 - 028495ECS01 - VW MK8 2.0T / Audi 3.0T Diverter Valve Spacer - Clear Anodized  - Let your turbo blow off some air for an exhilarating driving experience! - ECS - Audi Volkswagen

Let your turbo blow off some air for an exhilarating driving experience! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4033242
Mfg#:
028495ECS01
In Stock
ON SALE! SAVE 20%
$87.99

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

$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4620042 - 06E905115G-6KT - Performance Ignition Coils - Set Of Six - Increased energy output over stock coil packs for a stronger and more consistent spark! - ECS - Audi

Increased energy output over stock coil packs for a stronger and more consistent spark! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

To be used with the 2.0T coil pack conversion kits.

Brand:
ECS - Corporate Logo
ES#:
4620042
Mfg#:
06E905115G-6KT
Ships on Aug 4, 2026
Auto Notify
ON SALE! SAVE 20%
$197.99

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

$158.35 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3545565 - 023954ECS01-02 - ECS Tuning Billet Engine Oil Dipstick - Black Anodized - A beautiful addition and durable upgrade for your engine - ECS - Audi

A beautiful addition and durable upgrade for your engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3545565
Mfg#:
023954ECS01-02
In Stock
ON SALE! SAVE 30%
$101.99

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

$71.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2678551 - 881AKT4 - 18" Style 881 Wheels - Set Of Four - 18x8.5 ET35 5x112 57.1CB - Silver With Machined Lip - Alzor - Audi Volkswagen

18x8.5 ET35 5x112 57.1CB - Silver With Machined Lip affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Requires the use of 15mm spacers and extended 45mm conical seat wheel bolts to clear the front caliper.

Brand:
Alzor - Corporate Logo
ES#:
2678551
Mfg#:
881AKT4
In Stock
ON SALE! SAVE 25%
$1176.99

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

$882.51 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4376374 - 06E 121065N - Upgraded Aluminum Coolant Pipe - Return (06E121065N) - Main return pipe that connects to the heater core hoses and the engine. Made from high-grade Aluminum vs OEM Plastic! - URO Premium - Audi

Main return pipe that connects to the heater core hoses and the engine. Made from high-grade Aluminum vs OEM Plastic! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO Premium - Corporate Logo
ES#:
4376374
Mfg#:
06E 121065N
In Stock
$58.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4324951 - 628-14KT - 19" Style 628 Wheels - Set Of Four - 19x8.5 ET35 5x112 66.6CB - Matte Gunmetal/Machined Face - Alzor - Audi MINI

19x8.5 ET35 5x112 66.6CB - Matte Gunmetal/Machined Face affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Alzor - Corporate Logo
ES#:
4324951
Mfg#:
628-14KT
In Stock
ON SALE! SAVE 25%
$1300.00

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

$975.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4376586 - MS100208-6KT - APR Upgraded Ignition Coil - Red - Set of Six - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - APR - Audi

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

To be used with the 2.0T coil pack conversion kits.

Brand:
APR - Corporate Logo
ES#:
4376586
Mfg#:
MS100208-6KT
In Stock
$214.92 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4849697 - 034-101-3108 - 034Motorsport PCV Breather Hose - EA839 3.0T - Upgrade your failure-prone PCV breather hose with the high-performance, reliable 034Motorsport PCV Breather Hose - 034Motorsport - Audi

Upgrade your failure-prone PCV breather hose with the high-performance, reliable 034Motorsport PCV Breather Hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4849697
Mfg#:
034-101-3108
Ships on Jun 25, 2026
Auto Notify
$249.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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%
$407.99

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

$367.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2748284 - 002411ECS02AKT6 - Wheel Spacer & Bolt Kit - 12.5mm With Black Ball Seat Bolts - Complete kit for two wheels, includes everything you need to install spacers - ECS - Audi

Complete kit for two wheels, includes everything you need to install spacers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748284
Mfg#:
002411ECS02AKT6
In Stock
ON SALE! SAVE 35%
$215.99

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

$140.35 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4780159 - 4M0615301ANAKT - Front & Rear Brake Service Kit - Featuring Zimmermann rotors and ECS DD23 Ceramic Brake Pads - Includes stainless set screws, brake wear sensors, and silicone brake lubricant. - Assembled By ECS - Audi

Featuring Zimmermann rotors and ECS DD23 Ceramic Brake Pads - Includes stainless set screws, brake wear sensors, and silicone brake lubricant. 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#:
4780159
Mfg#:
4M0615301ANAKT
In Stock
ON SALE! SAVE 20%
$871.99

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

$699.55 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3491530 - 034-404-1005 - Dynamic+ Lowering Springs - Engineered to improve handling and deliver superb ride quality! - 034Motorsport - Audi

Engineered to improve handling and deliver superb ride quality! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3491530
Mfg#:
034-404-1005
In Stock
$345.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2748291 - 6-ECS-024 - Wheel Spacer & Bolt Kit - 20mm With Black Ball Seat Bolts - Add some style to your Audi with these wheel spacers - ECS - Audi

Add some style to your Audi with these wheel spacers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748291
Mfg#:
6-ECS-024
In Stock
ON SALE! SAVE 10%
$183.59

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

$165.23 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#251841 - 50361 - Sport Springs - Set - Unrivaled comfort and performance. Average lowering of 1.5"F 1.5"R - H&R - Audi

Unrivaled comfort and performance. Average lowering of 1.5"F 1.5"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!

Brand:
H&R - Corporate Logo
ES#:
251841
Mfg#:
50361
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.

$439.00

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

$299.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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