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Audi S4 Most Popular Parts

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Power Stop Z23 Evolution Sport Front Brake Kit (345mm)

ES#3194981 - K6140 - Power Stop Z23 Evolution Sport Front Brake Kit (345mm) - A performance front-wheel brake upgrade featuring drilled & slotted rotors and low-dust carbon-fiber ceramic pads. - Power Stop - Audi

A performance front-wheel brake upgrade featuring drilled & slotted rotors and low-dust carbon-fiber ceramic pads. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Power Stop - Corporate Logo
ES#:
3194981
Mfg#:
K6140
In Stock
$374.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Performance Lightweight Flywheel clutch Kit - Stage 3+

ES#4027478 - 003886ECS01AKT8 - Performance Lightweight Flywheel clutch Kit - Stage 3+ - ECS Lightweight Flywheel with a Spec Stage 3+ clutch kit rated at 595ft/lbs - Assembled By ECS - Audi

ECS Lightweight Flywheel with a Spec Stage 3+ clutch kit rated at 595ft/lbs 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#:
4027478
Mfg#:
003886ECS01AKT8
Back Ordered
Auto Notify
ON SALE!
$3291.99

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

$2999.82 USD
This product is lifetime replacement eligible Lifetime Replacement

Lower Intake Manifold Gasket - Priced Each

ES#3426845 - 079129717B - Lower Intake Manifold Gasket - Priced Each - Seals the intake manifolds to the cylinder heads - Elring - Audi

Seals the intake manifolds to the cylinder heads affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
3426845
Mfg#:
079129717B
In Stock
$5.25 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cabin Air Filter - Priced Each

ES#4829743 - 4M0819439C - Cabin Air Filter - Priced Each - Genuine Volkswagen Audi - Audi

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4829743
Mfg#:
4M0819439C
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.

$57.99

This product was last offered at the strikethrough price on
06-12-2026

$56.99 USD
Free Shipping
on orders $49 and up

19" Wheel Spacer Flush Fit Kit - Black Bolts

ES#3240970 - 023881ecs01KT - 19" Wheel Spacer Flush Fit Kit - Black Bolts - Includes ECS spacers & Black bolts to obtain a flush look on your OE 19" wheels - ECS - Audi

Includes ECS spacers & Black bolts to obtain a flush look on your OE 19" wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
3240970
Mfg#:
023881ECS01KT
In Stock
$271.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer Flush Fit Kit - Black Bolts - Aggressive

ES#3138548 - 003462ECS01KT - Wheel Spacer Flush Fit Kit - Black Bolts - Aggressive - Includes spacers & Black bolts to obtain a flush look on your OE 19" 'Peeler' style wheels - ECS - Audi

Includes spacers & Black bolts to obtain a flush look on your OE 19" 'Peeler' style wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
3138548
Mfg#:
003462ECS01KT
In Stock
$270.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#2848044 - CTS-EXH-CB-0015 - Cat-Back Exhaust System - 2.5" stainless steel with quad 3" polished stainless tips - CTS - Audi

2.5" stainless steel with quad 3" polished stainless tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
2848044
Mfg#:
CTS-EXH-CB-0015
Ships in 7 Business Days
ON SALE! SAVE 15%
$1399.99

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

$1189.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Premium Low-Met OE Equivalent Pad - Front

ES#4486468 - 4M0698151AP - Premium Low-Met OE Equivalent Pad - Front - Quality brake pads from an original equipment supplier - Brembo - Audi

Quality brake pads from an original equipment supplier affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Brembo - Corporate Logo
ES#:
4486468
Mfg#:
4M0698151AP
In Stock
31% off MSRP

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

$122.99

This product was last offered at the strikethrough price on
01-21-2026

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

Billet Tow Hook Receiver License Plate Mount - US Style

ES#2931571 - E10701130 - Billet Tow Hook Receiver License Plate Mount - US Style - Keep your front bumper free of holes and allow your front plate to be easily removed for shows or photo shoots - Rennline - Audi Volkswagen

Keep your front bumper free of holes and allow your front plate to be easily removed for shows or photo shoots affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rennline - Corporate Logo
ES#:
2931571
Mfg#:
E10701130
In Stock
$145.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wireless CarPlay/Android Auto Retrofit Module

ES#4493819 - 001954LA01-01 - Wireless CarPlay/Android Auto Retrofit Module - Plug & Play interface to add Apple CarPlay and Android Auto to your factory infotainment system - Bremmen Parts - Audi

Plug & Play interface to add Apple CarPlay and Android Auto to your factory infotainment system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles without MMI only (Buttons on dashboard instead of center console). Vehicles up through the 2013 model year without Bluetooth streaming audio require an AMI cable to be plugged in to receive sound (not included).

Brand:
Bremmen Parts - Corporate Logo
ES#:
4493819
Mfg#:
001954LA01-01
In Stock
ON SALE!
$359.99

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

$348.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Axle Assembly - Left

ES#3072342 - 8E0407271AT - Front Axle Assembly - Left - Complete driveshaft with CV joints; ready for installation - GKN Drivetech - Audi

Complete driveshaft with CV joints; ready for installation affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
GKN Drivetech - Corporate Logo
ES#:
3072342
Mfg#:
8E0407271AT
In Stock at Vendor
$673.72

This product was last offered at the strikethrough price on
05-09-2026

$655.92 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 2 IE Performance ECU Tune - Includes Stage 1 TCU Tune & POWERlink Cable

ES#4418873 - IESOVZ12 - Stage 2 IE Performance ECU Tune - Includes Stage 1 TCU Tune & POWERlink Cable - Average gain of 138 horsepower and 178 lb-ft of torque on 91 Octane with full bolts-ons - Integrated Engineering - Audi

Average gain of 138 horsepower and 178 lb-ft of torque on 91 Octane with full bolts-ons affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
Requires downpipe, intake, and intercooler upgrades.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4418873
Mfg#:
IESOVZ12
In Stock
$1178.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Wheel Spacer Pair - 10mm

ES#4020172 - 034-604-7006 - 034Motorsport Wheel Spacer Pair - 10mm - Designed to fit most Audi & Volkswagen vehicles with a 66.5mm center bore and 5x112mm wheel bolt patterns. - 034Motorsport - Audi

Designed to fit most Audi & Volkswagen vehicles with a 66.5mm center bore and 5x112mm wheel bolt patterns. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4020172
Mfg#:
034-604-7006
In Stock
$98.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE HPFP Internal Upgrade

ES#4706077 - IEFUVZ1 - IE HPFP Internal Upgrade - The largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and Stage 1/2 Plus ECU tunes. - Integrated Engineering - Audi

The largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and Stage 1/2 Plus ECU tunes. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4706077
Mfg#:
IEFUVZ1
In Stock
$419.99 USD
Free Shipping
on orders $49 and up

Supercharger Inlet Kit - Silicone - Audi B8 S4/S5 3.0T

ES#3170829 - 007344ECS01KT2 - Supercharger Inlet Kit - Silicone - Audi B8 S4/S5 3.0T - Wire reinforced silicone smooths the intake tract & hinders collapsing. The ultimate in durability! - ECS - Audi
ECS Tuning recommends this product.

Wire reinforced silicone smooths the intake tract & hinders collapsing. The ultimate in durability! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
3170829
Mfg#:
007344ECS01KT2
In Stock
$167.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Liqui Moly MolyGen - Premium Oil Service Kit

ES#3439023 - molygenKT2 - Liqui Moly MolyGen - Premium Oil Service Kit - Includes Hengst oil filter and Liqui Moly 5w-40 oil with MolyGen technology - Assembled By ECS - Audi Volkswagen

Includes Hengst oil filter and Liqui Moly 5w-40 oil with MolyGen technology 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#:
3439023
Mfg#:
MOLYGENKT2
In Stock
ON SALE! SAVE 26%
$160.99

This product was last offered at the strikethrough price on
05-15-2026

$119.80 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

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