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Audi A4 Most Popular Parts

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Rear Sway Bar Installation Kit

ES#2586660 - B5SWAYKT1 - Rear Sway Bar Installation Kit - Includes new bushings, brackets and hardware - Assembled By ECS - Audi

Includes new bushings, brackets and hardware 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with standard suspension

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586660
Mfg#:
B5SWAYKT1
Back Ordered
ON SALE!
$132.99

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

$127.87 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Replacement Kit - Stage 1

ES#2718902 - 068117021Bkt - Oil Cooler Replacement Kit - Stage 1 - Everything you need to replace your leaking oil cooler - Assembled By ECS - Audi

Everything you need to replace your leaking oil cooler 10X Entries Into Our F80 M3 Sweepstakes
Up to VIN 8D-X-199999, split is in the 1999 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2718902
Mfg#:
068117021BKT
Back Ordered
ON SALE! SAVE 28%
$95.47

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

$68.36 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Emissions Service Kit

ES#2219683 - 06A103213AM - Emissions Service Kit - Don't let a clogged PCV system ruin your engine - Assembled By ECS - Audi

Don't let a clogged PCV system ruin your engine 10X Entries Into Our F80 M3 Sweepstakes
From VIN 8E-4-000001, split is in the 2004 model year - with 20mm relief valve

Brand:
Assembled By ECS - Corporate Logo
ES#:
2219683
Mfg#:
06A103213AM
Back Ordered
ON SALE! SAVE 10%
$485.99

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

$438.27 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

front CV Joint Refresh Kits

ES#2762463 - 8E0498203Dkt - front CV Joint Refresh Kits - Complete refresh kit including hardware, boots, clamps, and grease - Assembled By ECS - Audi

Complete refresh kit including hardware, boots, clamps, and grease 10X Entries Into Our F80 M3 Sweepstakes
Up to the 2003 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2762463
Mfg#:
8E0498203DKT
Back Ordered
ON SALE!
$97.99

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

$93.91 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Exterior Bulb Refresh Kit W/ Fog Lights

ES#2581939 - 64211KT - Exterior Bulb Refresh Kit W/ Fog Lights - Includes all headlight, tail light, fog light and side marker bulbs - Assembled By ECS - Audi

Includes all headlight, tail light, fog light and side marker bulbs 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with halogen headlights

Brand:
Assembled By ECS - Corporate Logo
ES#:
2581939
Mfg#:
64211KT
Back Ordered
ON SALE!
$119.99

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

$118.38 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Power Steering Fluid Reservoir

ES#5373785 - 8D0422376C - Power Steering Fluid Reservoir - Clean up your engine bay or replace a damaged reservoir - Atlantic Automotive Engineering - Audi Volkswagen

Clean up your engine bay or replace a damaged reservoir

Brand:
Atlantic Automotive Engineering - Corporate Logo
ES#:
5373785
Mfg#:
8D0422376C
Back Ordered
$25.99 USD
Free Shipping
on orders $49 and up

20" BBS CH-R Wheels - Set Of Four

ES#3138078 - CH118BPOKT1 - 20" BBS CH-R Wheels - Set Of Four - 20x8.5 ET40 5x112 66.6CB - Satin Black with Polished Rim Protector - BBS - Audi BMW Mercedes Benz

20x8.5 ET40 5x112 66.6CB - Satin Black with Polished Rim Protector

Brand:
BBS - Corporate Logo
ES#:
3138078
Mfg#:
CH118BPOKT1
Back Ordered
$3784.00 USD
This product is lifetime replacement eligible Lifetime Replacement

18" BBS SR Wheels - Set Of Four

ES#4753222 - SR041VGPKKT1 - 18" BBS SR Wheels - Set Of Four - 18x8 ET30 5x112 66.6CB - Satin Black with Diamond Cut Face - BBS - Audi BMW Mercedes Benz MINI

18x8 ET30 5x112 66.6CB - Satin Black with Diamond Cut Face

Brand:
BBS - Corporate Logo
ES#:
4753222
Mfg#:
SR041VGPKKT1
Back Ordered
$2031.99 USD
This product is lifetime replacement eligible Lifetime Replacement

18" BBS RI-A Wheels - Set Of Four

ES#4753247 - RIA023GLKT1 - 18" BBS RI-A Wheels - Set Of Four - 18x8.5 ET45 5x112 66.6CB - Gold - BBS - Audi BMW Mercedes Benz MINI

18x8.5 ET45 5x112 66.6CB - Gold

Brand:
BBS - Corporate Logo
ES#:
4753247
Mfg#:
RIA023GLKT1
Back Ordered
$4433.99 USD
This product is lifetime replacement eligible Lifetime Replacement

18" BBS CH-R Wheels - Set Of Four

ES#3138059 - CH146SPOKT1 - 18" BBS CH-R Wheels - Set Of Four - 18x8.5 ET38 5x112 66.6CB - Brilliant Silver with Polished Rim Protector - BBS - Audi BMW Mercedes Benz MINI

18x8.5 ET38 5x112 66.6CB - Brilliant Silver with Polished Rim Protector

Brand:
BBS - Corporate Logo
ES#:
3138059
Mfg#:
CH146SPOKT1
Back Ordered
$2997.99 USD
This product is lifetime replacement eligible Lifetime Replacement

18" BBS CH-R Wheels - Set Of Four

ES#3137838 - CH146SPOKT - 18" BBS CH-R Wheels - Set Of Four - 18x8.5 ET38 5x112 57.1CB - Brilliant Silver with Polished Rim Protector - BBS - Audi Volkswagen

18x8.5 ET38 5x112 57.1CB - Brilliant Silver with Polished Rim Protector

Brand:
BBS - Corporate Logo
ES#:
3137838
Mfg#:
CH146SPOKT
Back Ordered
$2997.99 USD
This product is lifetime replacement eligible Lifetime Replacement

ER Series Coilover Suspension Kit - B9 Audi A4/S4

ES#5375563 - S-28-ER - ER Series Coilover Suspension Kit - B9 Audi A4/S4 - Get the high quality, unique features of the BC Racing "BR" and "RM" series with the added benefit of an external reservoir for superior performance! - BC Racing - Audi

Get the high quality, unique features of the BC Racing "BR" and "RM" series with the added benefit of an external reservoir for superior performance! For vehicles with production date from 7/12/2016 with 48.5mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
5375563
Mfg#:
S-28-ER
Back Ordered
$2255.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BR Series Coilover Suspension Kit - B9 Audi A4/S4

ES#4424822 - S-28-BR - BR Series Coilover Suspension Kit - B9 Audi A4/S4 - Featuring 30 levels of adjustment and performance spring rates and valving that makes the BR Series perfect for both daily drivers and track warriors! - BC Racing - Audi

Featuring 30 levels of adjustment and performance spring rates and valving that makes the BR Series perfect for both daily drivers and track warriors! For vehicles with production date from 7/12/2016 with 48.5mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
4424822
Mfg#:
S-28-BR
Back Ordered
$1195.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DS Series Coilover Suspension Kit - B9 Audi A4/S4

ES#5375567 - S-27-DS - DS Series Coilover Suspension Kit - B9 Audi A4/S4 - BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. - BC Racing - Audi

BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. For vehicles with production date up to 7/11/2016 with 53mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
5375567
Mfg#:
S-27-DS
Back Ordered
$1395.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DS Series Coilover Suspension Kit

ES#3521685 - S-01-DS - DS Series Coilover Suspension Kit - Featuring 30 levels of adjustment and increased damping force at low speed piston velocities - BC Racing - Audi

Featuring 30 levels of adjustment and increased damping force at low speed piston velocities

Brand:
BC Racing - Corporate Logo
ES#:
3521685
Mfg#:
S-01-DS
Back Ordered
$1395.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DS Series Coilover Suspension Kit - B9 Audi A4/S4

ES#5375516 - S-35-DS - DS Series Coilover Suspension Kit - B9 Audi A4/S4 - BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. - BC Racing - Audi

BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. For vehicles with production date up to 7/11/2016 with 53mm front strut body with factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
5375516
Mfg#:
S-35-DS
Back Ordered
$1395.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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