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Audi S4 Most Popular Parts

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Rear 2-Piece Slotted Brake Rotors - Pair (330x22)

ES#4429974 - 034-301-2008 - Rear 2-Piece Slotted Brake Rotors - Pair (330x22) - 034Motorsport 330mmx22mm 2-Piece Floating Rear Brake Rotor Upgrade Kit - 034Motorsport - Audi

034Motorsport 330mmx22mm 2-Piece Floating Rear Brake Rotor Upgrade Kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4429974
Mfg#:
034-301-2008
In Stock
$994.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Kit

ES#3647777 - 48322KT - Timing Chain Kit - Includes the upgraded RS4 metal guide rail, OEM & Bremmen additional guide rails, timing chains and tensioners - The essentials necessary to get the job done! - Assembled By ECS - Audi

Includes the upgraded RS4 metal guide rail, OEM & Bremmen additional guide rails, timing chains and tensioners - 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!
Up to VIN# 8E-4-200 000, split is in 2004 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647777
Mfg#:
48322KT
In Stock
ON SALE! SAVE 27%
$1351.99

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

$992.21 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Billet Washer Fluid Reservoir Cap - Black Anodized

ES#3247518 - 022733ECS01-01 - Billet Washer Fluid Reservoir Cap - Black Anodized - Lose the plastic! - ECS - Audi Volkswagen Porsche

Lose the plastic! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3247518
Mfg#:
022733ECS01-01
In Stock
ON SALE! SAVE 20%
$92.99

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

$74.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbocharger Installation Kit

ES#4630044 - 034-145-1506 - Turbocharger Installation Kit - This complete Turbocharger Installation Hardware/Gasket Kit for the B9/B9.5 Audi S4/S5/SQ5 equipped with the single-turbo EA839 3.0T includes everything you need to install a new stock-fit turbocharger. - 034Motorsport - Audi

This complete Turbocharger Installation Hardware/Gasket Kit for the B9/B9.5 Audi S4/S5/SQ5 equipped with the single-turbo EA839 3.0T includes everything you need to install a new stock-fit turbocharger. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4630044
Mfg#:
034-145-1506
In Stock
$66.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Black DRA Series Wheel Spacers - 30mm (1 Pair)

ES#4753208 - 60556651SW - Black DRA Series Wheel Spacers - 30mm (1 Pair) - H&R 30 mm spacers attach with supplied bolts, uses existing bolts to attach wheel to spacers. Bolts to the hub - H&R - Audi Mercedes Benz Porsche

H&R 30 mm spacers attach with supplied bolts, uses existing bolts to attach wheel to spacers. Bolts to the hub 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#:
4753208
Mfg#:
60556651SW
In Stock
$197.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B5 Quattro Rear Wheel Bearing Service Kit

ES#3188120 - 000576SCH01AKT - B5 Quattro Rear Wheel Bearing Service Kit - Includes Schwaben service tool, wheel bearings, and hardware to conveniently replace both rear wheel bearings on your B5 quattro - Assembled By ECS - Audi

Includes Schwaben service tool, wheel bearings, and hardware to conveniently replace both rear wheel bearings on your B5 quattro 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#:
3188120
Mfg#:
000576SCH01AKT
In Stock
ON SALE! SAVE 23%
$351.99

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

$269.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

20" Alzor Style 628 Wheel and Tire Package - 255/30R20 - Audi B9 A4/S4/A5/S5

ES#5425812 - 628-13-25530-B9 - 20" Alzor Style 628 Wheel and Tire Package - 255/30R20 - Audi B9 A4/S4/A5/S5 - 20x9 ET30 5x112 66.6CB - Matte Gunmetal/Machine Face - With your choice of tires mounted and balanced for an easy install! - Alzor - Audi

20x9 ET30 5x112 66.6CB - Matte Gunmetal/Machine Face - With your choice of tires mounted and balanced for an easy install! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Alzor - Corporate Logo
ES#:
5425812
Mfg#:
628-13-25530-B9
In Stock
ON SALE!
Starting at $1484.00 USD
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Front Big Brake Kit - Stage 2 - 2-Piece Tru-Float Scalloped Rotors (345x30)

ES#3579246 - 003523ecs01aKT1 - Front Big Brake Kit - Stage 2 - 2-Piece Tru-Float Scalloped Rotors (345x30) - Upgrade your brake system to the 4-piston Brembo Audi Q5 calipers with ECS Tru-Float scalloped rotors - ECS - Audi

Upgrade your brake system to the 4-piston Brembo Audi Q5 calipers with ECS Tru-Float scalloped rotors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3579246
Mfg#:
003523ECS01AKT1
Ships in 1 day
$2963.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

18" RSe10 - Set Of Four

ES#4447260 - 88.10.17bgKT - 18" RSe10 - Set Of Four - 18"x8.5" ET45 5x112 - Gloss Black - Neuspeed - Audi Volkswagen

18"x8.5" ET45 5x112 - Gloss Black affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Neuspeed - Corporate Logo
ES#:
4447260
Mfg#:
88.10.17BGKT
Ships in 2 Business Days
$1478.99 USD
This product is lifetime replacement eligible Lifetime Replacement

18" RSe10 - Set Of Four

ES#4447261 - 88.10.17brgKT - 18" RSe10 - Set Of Four - 18"x8.5" ET45 5x112 - Gloss Bronze - Neuspeed - Audi Volkswagen

18"x8.5" ET45 5x112 - Gloss Bronze affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Neuspeed - Corporate Logo
ES#:
4447261
Mfg#:
88.10.17BRGKT
Ships in 2 Business Days
$1478.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil - Set Of Eight

ES#2532293 - 077905115TKT1 - Ignition Coil - Set Of Eight - Keep your engine running strong - Bremi - Audi

Keep your engine running strong affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Bremi - Corporate Logo
ES#:
2532293
Mfg#:
077905115TKT1
In Stock at Vendor
$213.99

This product was last offered at the strikethrough price on
04-09-2026

$196.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Rear Differential Mount Kit

ES#3172515 - 018327ecs01KT - Complete Rear Differential Mount Kit - Includes the ECS Rear Differential Mount and Carrier Mount Inserts! - ECS - Audi

Includes the ECS Rear Differential Mount and Carrier Mount Inserts! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3172515
Mfg#:
018327ECS01KT
Ships on Oct 13, 2026
Auto Notify
ON SALE! SAVE 15%
$385.99

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

$328.09 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Camshaft Kit - 3.0T

ES#4690118 - 034-201-1006 - 034Motorsport Camshaft Kit - 3.0T - A direct drop-in replacement for the factory camshafts, valve springs, and retainers - 034Motorsport - Audi

A direct drop-in replacement for the factory camshafts, valve springs, and retainers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fitment is confirmed for B8, and pending confirmation for B8.5.
For vehicles up to the 2012 model year (Pre-Facelift)

Brand:
034Motorsport - Corporate Logo
ES#:
4690118
Mfg#:
034-201-1006
Ships in 2 Business Days
$3858.00

This product was last offered at the strikethrough price on
03-08-2026

$2950.00 USD
Free Shipping

19" Style 7215 Wheels - Set Of Four

ES#4900280 - 7215-5KT1 - 19" Style 7215 Wheels - Set Of Four - 19x7.5 ET45 5x112 57.1CB - Black/Machined Face - Alzor - Audi Volkswagen

19x7.5 ET45 5x112 57.1CB - Black/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#:
4900280
Mfg#:
7215-5KT1
In Stock
ON SALE! SAVE 25%
$1310.00

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

$982.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Style 654 Wheels - Set Of Four

ES#3690745 - 654-3KT - 19" Style 654 Wheels - Set Of Four - 19"x8.5" ET42 5x112 - Gloss Gunmetal/Machine Face - Alzor - Audi Volkswagen

19"x8.5" ET42 5x112 - Gloss Gunmetal/Machine Face affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Alzor - Corporate Logo
ES#:
3690745
Mfg#:
654-3KT
In Stock
ON SALE! SAVE 25%
$1310.00

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

$982.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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