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Audi A4 Most Popular Parts

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ECS Performance Engine Mount Kit - Audi B8 A4/S4/Q5, C7 A6

ES#4315393 - 002734ECS01 - ECS Performance Engine Mount Kit - Audi B8 A4/S4/Q5, C7 A6 - Get rid of the slop with ECS performance polyurethane engine mounts! - ECS - Audi

Get rid of the slop with ECS performance polyurethane engine mounts! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4315393
Mfg#:
002734ECS01
In Stock
ON SALE! SAVE 20%
$703.99

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

$563.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Rear Differential Mount - Audi B5 A4/S4

ES#2730494 - 003248ECS01A - Performance Rear Differential Mount - Audi B5 A4/S4 - Increase drivetrain rigidity and response! - ECS - Audi

Increase drivetrain rigidity and response! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2730494
Mfg#:
003248ECS01A
In Stock
ON SALE! SAVE 25%
$243.99

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

$182.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Cover - Upper

ES#4766164 - 06K103269F - Timing Chain Cover - Upper - Upper timing cover located on the cylinder head - Bremmen Parts - Audi Volkswagen

Upper timing cover located on the cylinder head 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with engine codes CYMC, DAYB, DLHB, CYNB

Brand:
Bremmen Parts - Corporate Logo
ES#:
4766164
Mfg#:
06K103269F
In Stock
ON SALE! SAVE 21%
$66.99

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

$53.03 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RedStuff Performance Brake Pad Set - Front & Rear

ES#4500176 - dp32290cKT - RedStuff Performance Brake Pad Set - Front & Rear - A high performance street pad, featuring Kevlar technology. - EBC - Audi

A high performance street pad, featuring Kevlar technology. 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
EBC - Corporate Logo
ES#:
4500176
Mfg#:
DP32290CKT
In Stock
$486.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Waste Gate Frequency Control N75 Valve

ES#2738386 - 06A906283E - Waste Gate Frequency Control N75 Valve - Get your turbo back in action with a new N75 valve. - URO - Audi Volkswagen
ECS Tuning recommends this product.

Get your turbo back in action with a new N75 valve. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2738386
Mfg#:
06A906283E
In Stock
$79.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B5 A4/S4 Manual - Driveshaft Center Support Bearing Carrier

ES#4609176 - 012158la01kt - B5 A4/S4 Manual - Driveshaft Center Support Bearing Carrier - As our beloved B5's age the stock center support bearing starts to wear out causing drivetrain clunk. This upgraded unit keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing - ECS - Audi

As our beloved B5's age the stock center support bearing starts to wear out causing drivetrain clunk. This upgraded unit keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing 10X Entries For Our 25th Anniversary Sweepstakes!
Manual Transmission B5 A4/S4

Brand:
ECS - Corporate Logo
ES#:
4609176
Mfg#:
012158LA01KT
In Stock
ON SALE! SAVE 25%
$302.99

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

$227.24 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Audi B9 A4 S-Line / S4 Grille Accent Set - Gloss Black

ES#3991472 - 028800ECS01 - Audi B9 A4 S-Line / S4 Grille Accent Set - Gloss Black - Upgrade your exterior styling - ECS - Audi

Upgrade your exterior styling 10X Entries For Our 25th Anniversary Sweepstakes!

For S-Line models only. Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
ECS - Corporate Logo
ES#:
3991472
Mfg#:
028800ECS01
In Stock
ON SALE! SAVE 20%
$292.99

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

$234.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Metal Extended Slave Cylinder Kit

ES#4508665 - 8k0721257eKT - Adjustable Metal Extended Slave Cylinder Kit - Improve clutch pedal feel and the push clutch to start issue all at once! - Assembled By ECS - Audi

Improve clutch pedal feel and the push clutch to start issue all at once! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4508665
Mfg#:
8K0721257EKT
In Stock
$329.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.0T Billet Boost Tap Assembly

ES#2718328 - 003621ECS01A - 2.0T Billet Boost Tap Assembly - Designed for the 2.0T engine, up to two boost tap points, and comes with necessary hardware - ECS - Audi Volkswagen

Designed for the 2.0T engine, up to two boost tap points, and comes with necessary hardware 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles with plastic intake manifolds

Brand:
ECS - Corporate Logo
ES#:
2718328
Mfg#:
003621ECS01A
In Stock
ON SALE!
$98.99

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

$94.04 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Lower PCV Hose (Replaces 06F103235A)

ES#3412048 - 023473ECS02 - Silicone Lower PCV Hose (Replaces 06F103235A) - Replace your failure-prone plastic PCV hose with a long term, high quality solution - ECS - Audi Volkswagen

Replace your failure-prone plastic PCV hose with a long term, high quality solution 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3412048
Mfg#:
023473ECS02
In Stock
ON SALE! SAVE 25%
$75.99

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

$56.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Pump & Follower Replacement Kit

ES#3639653 - 06f127025kkKT5 - Fuel Pump & Follower Replacement Kit - Replacement cam follower, high pressure fuel pump, hardware, and necessary fittings/adapters for vehicles with banjo style fuel line - Assembled By ECS - Audi

Replacement cam follower, high pressure fuel pump, hardware, and necessary fittings/adapters for vehicles with banjo style fuel line 10X Entries For Our 25th Anniversary Sweepstakes!
For earlier models (up to VIN 8E-6-266700) with existing banjo style fuel line and fitting

Brand:
Assembled By ECS - Corporate Logo
ES#:
3639653
Mfg#:
06F127025KKKT5
In Stock
ON SALE! SAVE 41%
$636.99

This product was last offered at the strikethrough price on
07-02-2026

$376.94 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Oil Filter Housing Cap

ES#2998988 - 002292ECS01 - Billet Aluminum Oil Filter Housing Cap - Aluminum oil filter housing replacement for plastic OE housing cap - ECS - Audi Volkswagen

Aluminum oil filter housing replacement for plastic OE housing cap 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2998988
Mfg#:
002292ECS01
In Stock
ON SALE!
$132.99

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

$129.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Trunk Spoiler - Audi B8 A4/S4

ES#2996602 - 013868ECS01A - Carbon Fiber Trunk Spoiler - Audi B8 A4/S4 - Add a touch of style and real carbon fiber to your Audi - ECS - Audi

Add a touch of style and real carbon fiber to your Audi 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles with an integrated trunk spoiler

Brand:
ECS - Corporate Logo
ES#:
2996602
Mfg#:
013868ECS01A
In Stock
ON SALE! SAVE 36%
$626.99

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

$400.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JE Performance Piston Set

ES#4338074 - JE-18T-242880 - JE Performance Piston Set - Includes rings, wire locks, and wrist pins - 81mm bore (stock), 9.25:1 CR, 86.4mm stroke (stock) - JE Piston - Audi Volkswagen

Includes rings, wire locks, and wrist pins - 81mm bore (stock), 9.25:1 CR, 86.4mm stroke (stock) *For use with 20mm wrist pin connecting rods*

Brand:
JE Piston - Corporate Logo
ES#:
4338074
Mfg#:
JE-18T-242880
Ships on Aug 7, 2026
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Drop In Replacement Air Filter

ES#3988613 - E-0646 - Drop In Replacement Air Filter - High-Flow cotton gauze filter designed to be a performer, while lasting a lifetime - K&N - Audi

High-Flow cotton gauze filter designed to be a performer, while lasting a lifetime

Brand:
K&N - Corporate Logo
ES#:
3988613
Mfg#:
E-0646
In Stock
$79.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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