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Audi S4 Most Popular Parts

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ES#4751074 - 025412ECS01EB2KT - Adjustable Damping Performance Coilover System - Audi B8/B8.5 & Thrust Arm Monoball Upgrade (M14 Ball Joints) - Take control of your ride while going low with our sport-tuned coilover system! - Enthusiast Bundles - Audi

Take control of your ride while going low with our sport-tuned coilover 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#:
4751074
Mfg#:
025412ECS01EB2KT
In Stock
ON SALE! SAVE 22%
$1887.31

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

$1478.77 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4212774 - MM.N.073 - D1S 5000K XB Xenon Bulb - Pair - Quality replacement xenon bulbs from Morimoto - Morimoto - Audi BMW Volkswagen Mercedes Benz MINI

Quality replacement xenon bulbs from Morimoto affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Morimoto - Corporate Logo
ES#:
4212774
Mfg#:
MM.N.073
In Stock
$89.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2622201 - DP32070C - Front Redstuff Performance Brake Pad Set - A high performance street pad, featuring Kevlar technology. - EBC - Audi Porsche

A high performance street pad, featuring Kevlar technology. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

For use with the Stage 2 Big Brake Kit

Brand:
EBC - Corporate Logo
ES#:
2622201
Mfg#:
DP32070C
In Stock
5% off MSRP

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

$193.31

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

$183.64 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#8637 - N90441103 - Front Flange Shaft Bolt - Priced Each - Secures the axle assembly to the transmission. M10x20 - Genuine Volkswagen Audi - Audi Volkswagen

Secures the axle assembly to the transmission. M10x20 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
8637
Mfg#:
N90441103
In Stock
$6.64 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4623709 - 487-2KT1 - 19" Style 487 Wheels - Set Of Four - 19"x8.0" ET40 5x112 57.1CB - Gunmetal - Alzor - Audi Volkswagen

19"x8.0" ET40 5x112 57.1CB - Gunmetal affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Alzor - Corporate Logo
ES#:
4623709
Mfg#:
487-2KT1
In Stock
ON SALE! SAVE 30%
$1310.00

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

$917.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2571665 - 8K2927156M - Mechatronics Control Unit - Controls S-Tronic shifting characteristics - Genuine Volkswagen Audi - Audi

Controls S-Tronic shifting characteristics affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with NSC transmission code - Please contact with VIN to verify fitment

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2571665
Mfg#:
8K2927156M
Special Order: No Guaranteed ETA
4% off MSRP

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

$7644.99

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

$7320.99 USD
ES#4941114 - 340.590 - Cylinder Head Gasket Kit - Comprehensive gasket set for engine rebuilds - Elring - Audi

Comprehensive gasket set for engine rebuilds affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Elring - Corporate Logo
ES#:
4941114
Mfg#:
340.590
In Stock
$232.99

This product was last offered at the strikethrough price on
04-15-2026

$208.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4429968 - 034-301-1007 - Front 2-Piece Floating Brake Rotors - Pair (345x30) - Lightweight rotors weighing 19lbs each! - 034Motorsport - Audi Porsche

Lightweight rotors weighing 19lbs each! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4429968
Mfg#:
034-301-1007
In Stock
$1042.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4751232 - 027963ECS01EBKT - Audi B8.5 S4 / A4 S-Line Facelift Front Lip & Gloss Black Grille Accent Set - Upgrade your exterior styling! - Enthusiast Bundles - Audi

Upgrade your exterior styling! 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#:
4751232
Mfg#:
027963ECS01EBKT
In Stock
ON SALE! SAVE 34%
$649.08

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

$429.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3706978 - 66340XNL - D3S 4200K Night Breaker 220HID Bulb - Pair - High output replacement xenon bulbs from Osram - Osram Sylvania - Audi Volkswagen

High output replacement xenon bulbs from Osram affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Osram Sylvania - Corporate Logo
ES#:
3706978
Mfg#:
66340XNL
Ships in 9 Business Days
$269.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4475593 - 06E145621SKT2 - Supercharger Intercooler Kit - Everything needed to replace failed heat exchangers. - Genuine Volkswagen Audi - Audi

Everything needed to replace failed heat exchangers. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4475593
Mfg#:
06E145621SKT2
Ships on Jun 15, 2026
$1719.50

This product was last offered at the strikethrough price on
04-20-2026

$1457.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
ES#3438261 - 079109229KT12 - Timing Chain Kit  - Includes the upgraded RS4 lower metal guide rail, iwis chains, and OEM tensioners/guides - The essentials necessary to get the job done! - Assembled By ECS - Audi

Includes the upgraded RS4 lower metal guide rail, iwis chains, and OEM tensioners/guides - The essentials necessary to get the job done! 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#:
3438261
Mfg#:
079109229KT12
In Stock at Vendor
ON SALE! SAVE 27%
$1419.99

This product was last offered at the strikethrough price on
01-03-2026

$1040.24 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
ES#3220600 - 7071 - High Performance B5 S4 All Aluminum Radiator  - Great option if you™re 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
ES#3426872 - 1J0698451R - Premium Ceramic OE Equivalent Pad - Rear - Brembo NAO Ceramic pads are designed to deliver improved comfort and reduced pad wear - Brembo - Audi Volkswagen

Brembo NAO Ceramic pads are designed to deliver improved comfort and reduced pad wear affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Brembo - Corporate Logo
ES#:
3426872
Mfg#:
1J0698451R
In Stock
29% 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
01-21-2026

$40.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3146390 - 019196ECS01A - Carbon Fiber Front Lip Spoiler - Audi B9 A4/S4 - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling 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

Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
ECS - Corporate Logo
ES#:
3146390
Mfg#:
019196ECS01A
In Stock
ON SALE! SAVE 41%
$875.99

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

$515.77 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3438177 - CTS-HW-266-187 - CTS Turbo Supercharger Crank Pulley Upgrade - 187mm - Larger diameter pulley increases the speed at which the supercharger spins, increasing the boost pressure output - CTS - Audi Porsche

Larger diameter pulley increases the speed at which the supercharger spins, increasing the boost pressure output affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*NOTE: This kit must be used with appropriate "Stage 2" performance software.

Brand:
CTS - Corporate Logo
ES#:
3438177
Mfg#:
CTS-HW-266-187
In Stock
$379.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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