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Audi A4 Essential Performance Parts & Upgrades

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Audi B9 Carbon Fiber Antenna Cover

ES#3468626 - 024985ECS01 - Audi B9 Carbon Fiber Antenna Cover - Add a unique, lightweight look to your B9 - ECS - Audi

Add a unique, lightweight look to your B9 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3468626
Mfg#:
024985ECS01
Ships in 7 Business Days
ON SALE! SAVE 20%
$100.99

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

$80.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Tunnel Street Shield Aluminum Skid Plate Kit

ES#3610307 - 023780ecs02KT - ECS Tuning Tunnel Street Shield Aluminum Skid Plate Kit - Protect your vehicle's tunnel and improve aerodynamics - ECS - Audi

Protect your vehicle's tunnel and improve aerodynamics 10X Entries For Our 25th Anniversary Sweepstakes!
Fits Manual and DSG Transmissions

Brand:
ECS - Corporate Logo
ES#:
3610307
Mfg#:
023780ECS02KT
Ships in 4 Business Days
ON SALE! SAVE 10%
$334.00

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

$300.60 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.0T Billet Boost Tap Assembly - Aluminum Intake Manifold

ES#2992381 - 0013625ECS01 - 2.0T Billet Boost Tap Assembly - Aluminum Intake Manifold - Designed specifically for the 2.0T engine, includes necessary hardware and custom bracket - ECS - Audi

Designed specifically for the 2.0T engine, includes necessary hardware and custom bracket 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles with metal intake manifolds

Brand:
ECS - Corporate Logo
ES#:
2992381
Mfg#:
0013625ECS01
In Stock
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber ECU Cover - Audi B9 A4/A5

ES#3136956 - 019468ECS01A - Carbon Fiber ECU Cover - Audi B9 A4/A5 - Compliment your engine bay and hide away the exposed ECU - ECS - Audi

Compliment your engine bay and hide away the exposed ECU 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3136956
Mfg#:
019468ECS01A
In Stock
ON SALE! SAVE 15%
$214.99

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

$182.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Oil Filter Housing - EA837 3.0T

ES#4583476 - 034-110-9004 - Billet Oil Filter Housing - EA837 3.0T - Looking to increase the reliability and integrity of your oil filter housing, and spruce up your engine bay as a bonus? - 034Motorsport - Audi Volkswagen

Looking to increase the reliability and integrity of your oil filter housing, and spruce up your engine bay as a bonus?

Brand:
034Motorsport - Corporate Logo
ES#:
4583476
Mfg#:
034-110-9004
In Stock
ON SALE! SAVE 10%
$117.00

This product was last offered at the strikethrough price on
06-28-2026

$105.30 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Magnetic Drain Plug - Priced Each

ES#4430826 - VWR180004 - Billet Magnetic Drain Plug - Priced Each - Capture harmful particles to protect your 2.0 TSI EA888 Gen3 & 3B engine - Racingline - Audi Volkswagen Porsche

Capture harmful particles to protect your 2.0 TSI EA888 Gen3 & 3B engine

Brand:
Racingline - Corporate Logo
ES#:
4430826
Mfg#:
VWR180004
Ships in 2 Business Days
$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Oil Filter Housing Kit - Polished

ES#2723775 - 003602ECS01A03A - Billet Aluminum Oil Filter Housing Kit - Polished - Aluminum oil filter housing replacement for plastic OE housing - ECS - Audi Volkswagen

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

Brand:
ECS - Corporate Logo
ES#:
2723775
Mfg#:
003602ECS01A03A
Ships on Sep 23, 2026
Auto Notify
ON SALE! SAVE 10%
$144.99

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

$130.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Oil Filter Housing With Removal Tool - Silver Anodized

ES#2608273 - 06D115408AKT - Billet Aluminum Oil Filter Housing With Removal Tool - Silver Anodized - Aluminum replacement for plastic OE filter housing with 36mm socket - Assembled By ECS - Audi Volkswagen

Aluminum replacement for plastic OE filter housing with 36mm socket 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2608273
Mfg#:
06D115408AKT
In Stock
ON SALE! SAVE 18%
$175.99

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

$143.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine Street Shield Skid Plate Hardware Kit

ES#3493177 - 003251ECS02KT - Engine Street Shield Skid Plate Hardware Kit - Replacement hardware kit for your ECS Engine Street Shield - ECS - Audi

Replacement hardware kit for your ECS Engine Street Shield 10X Entries For Our 25th Anniversary Sweepstakes!
Fits from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3493177
Mfg#:
003251ECS02KT
In Stock
ON SALE! SAVE 20%
$140.53

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

$112.42 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Engine Cover Overlay

ES#3426555 - 022526ecs01KT - Carbon Fiber Engine Cover Overlay - Add a touch of carbon fiber to your stock engine cover! - ECS - Audi

Add a touch of carbon fiber to your stock engine cover! 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles with production dates up to 03/22/2021

Brand:
ECS - Corporate Logo
ES#:
3426555
Mfg#:
022526ECS01KT
In Stock
ON SALE! SAVE 15%
$262.99

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

$223.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Antenna Cover

ES#3191298 - 022696ECS01 - Carbon Fiber Antenna Cover - Add a unique, lightweight look to your ride - ECS - Audi

Add a unique, lightweight look to your ride 10X Entries For Our 25th Anniversary Sweepstakes!

Fits up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3191298
Mfg#:
022696ECS01
In Stock
ON SALE! SAVE 20%
$93.99

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

$75.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CNC-Machined Billet Aluminum Boost Tap

ES#3432374 - 034-145-Z012 - CNC-Machined Billet Aluminum Boost Tap - Installs between the intake manifold and PCV breather hose for a solid boost reference point - 034Motorsport - Audi Volkswagen

Installs between the intake manifold and PCV breather hose for a solid boost reference point For vehicles with plastic intake manifolds

Brand:
034Motorsport - Corporate Logo
ES#:
3432374
Mfg#:
034-145-Z012
Ships on Aug 7, 2026
Auto Notify
ON SALE! SAVE 10%
$63.00

This product was last offered at the strikethrough price on
06-28-2026

$56.70 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 A4 Carbon Fiber Left Side Engine Bay Cover

ES#3570283 - 022738ecs02KT - Audi B8/B8.5 A4 Carbon Fiber Left Side Engine Bay Cover - Cover up unsightly under hood components with carbon fiber style! - ECS - Audi

Cover up unsightly under hood components with carbon fiber style! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3570283
Mfg#:
022738ECS02KT
Ships on Aug 31, 2026
Auto Notify
ON SALE! SAVE 15%
$236.99

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

$201.44 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B6 A4 1.8T Cat Back Exhaust System & Street Shield Aluminum Skid Plate Kit

ES#4751095 - 016837LA01EBKT - B6 A4 1.8T Cat Back Exhaust System & Street Shield Aluminum Skid Plate Kit - Enhance the sounds of your A4 and keep it protected with an ECS Tuning Street Shield - Enthusiast Bundles - Audi

Enhance the sounds of your A4 and keep it protected with an ECS Tuning Street Shield Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!
For 5 and 6 speed manual transmissions only

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751095
Mfg#:
016837LA01EBKT
In Stock
ON SALE! SAVE 16%
$1674.99

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

$1399.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Oil Filter Housing With Removal Tool - Black Anodized

ES#2730475 - 003602ECS01A02AK - Billet Aluminum Oil Filter Housing With Removal Tool - Black Anodized - Aluminum replacement for plastic OE filter housing with 36mm socket - Assembled By ECS - Audi Volkswagen

Aluminum replacement for plastic OE filter housing with 36mm socket 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2730475
Mfg#:
003602ECS01A02AK
In Stock
ON SALE! SAVE 13%
$175.99

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

$152.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS B-Cool Billet Oil Filter Housing

ES#3660001 - CTS-HW-0243 - CTS B-Cool Billet Oil Filter Housing - Offering great looks and heat dissipation - Not only does the B-Cool filter look good, but it works great! - CTS - Audi

Offering great looks and heat dissipation - Not only does the B-Cool filter look good, but it works great!

Brand:
CTS - Corporate Logo
ES#:
3660001
Mfg#:
CTS-HW-0243
In Stock
ON SALE! SAVE 20%
$79.99

This product was last offered at the strikethrough price on
07-10-2026

$63.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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