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Audi A4 Essential Performance Parts & Upgrades

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MQB Magnetic Drain Plug - With 5 Replacement O-Rings

ES#4006896 - 015137ecs02KT - MQB Magnetic Drain Plug - With 5 Replacement O-Rings - Capture harmful particulates from circulating within your oiling system and make services easier with our 13mm hex drive - ECS - Audi Volkswagen Porsche

Capture harmful particulates from circulating within your oiling system and make services easier with our 13mm hex drive affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4006896
Mfg#:
015137ECS02KT
In Stock
ON SALE! SAVE 38%
$49.99

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

$30.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Build Your Own Audi B8 A4 2.0T Single Exit Valved Cat Back Exhaust System

ES#4487995 - 003353ECS - Build Your Own Audi B8 A4 2.0T Single Exit Valved Cat Back Exhaust System - Choose your own configuration along with your choice of exhaust tips and more! - ECS - Audi

Choose your own configuration along with your choice of exhaust tips and more! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4487995
Mfg#:
003353ECS
Ships on Aug 3, 2026
ON SALE!
Starting at $700.85 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 Transmission Street Shield Aluminum Skid Plate

ES#3979295 - 027567ecs01KT - Audi B9 A4/S4 Transmission Street Shield Aluminum Skid Plate - Protect your transmission pan and improve aerodynamics - ECS - Audi

Protect your transmission pan and improve aerodynamics affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3979295
Mfg#:
027567ECS01KT
Ships in 2 Business Days
ON SALE! SAVE 15%
$347.99

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

$295.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Ultimate Audi B8 Facelift Street Shield Kit

ES#3612455 - 003251ecs01KT1 - ECS Tuning Ultimate Audi B8 Facelift Street Shield Kit - Get the ultimate under body protection for your B8! - ECS - Audi

Get the ultimate under body protection for your B8! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8.5 chassis from the 2013 model year with manual and DSG transmissions only
Fits B8.5 chassis from the 2013 model year with manual and DSG transmissions only

Brand:
ECS - Corporate Logo
ES#:
3612455
Mfg#:
003251ECS01KT1
Ships in 7 Business Days
ON SALE! SAVE 10%
$1068.99

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

$962.04 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 2.0T Valved Exhaust System - Cat Back

ES#4488077 - 021275ECS01 - Audi B9 A4 2.0T Valved Exhaust System - Cat Back - Max gains of +16 WHP and +17 WTQ on our B9 A4 equipped with a Luft-Technik intake, ECS Intercooler/charge pipes, and a stage 1 tune! - ECS - Audi

Max gains of +16 WHP and +17 WTQ on our B9 A4 equipped with a Luft-Technik intake, ECS Intercooler/charge pipes, and a stage 1 tune! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles up through the 2018 model year only (Pre-Facelift)

Brand:
ECS - Corporate Logo
ES#:
4488077
Mfg#:
021275ECS01
Ships on Nov 13, 2026
ON SALE!
Starting at $1152.88 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

MQB Magnetic Drain Plug - Priced Each

ES#3478576 - 015137ECS02 - MQB Magnetic Drain Plug - Priced Each - Capture harmful particulates from circulating within your oiling system and make services easier with our 13mm hex drive - ECS - Audi Volkswagen Porsche

Capture harmful particulates from circulating within your oiling system and make services easier with our 13mm hex drive affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3478576
Mfg#:
015137ECS02
In Stock
ON SALE! SAVE 36%
$24.99

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

$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Ultimate Audi B8 Pre-Facelift Street Shield Kit

ES#3612454 - 003251ecs01aKT - ECS Tuning Ultimate Audi B8 Pre-Facelift Street Shield Kit - Get the ultimate under body protection for your B8! - ECS - Audi

Get the ultimate under body protection for your B8! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8 chassis up to the 2012 model year with manual and DSG transmissions only

Brand:
ECS - Corporate Logo
ES#:
3612454
Mfg#:
003251ECS01AKT
Ships in 7 Business Days
ON SALE! SAVE 10%
$914.99

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

$823.49 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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 Antenna Cover

ES#3191300 - 022697ECS01 - Carbon Fiber Antenna Cover - Add a unique, lightweight look to your ride - ECS - Audi Volkswagen

Add a unique, lightweight look to your ride affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3191300
Mfg#:
022697ECS01
In Stock
ON SALE! SAVE 20%
$95.99

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

$76.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B6 / B7 Carbon Fiber B-Pillar Trim Set

ES#3662300 - 026331ECS01 - Audi B6 / B7 Carbon Fiber B-Pillar Trim Set - Make your good side great with carbon fiber! - ECS - Audi

Make your good side great with carbon fiber! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3662300
Mfg#:
026331ECS01
In Stock
ON SALE! SAVE 10%
$323.99

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

$291.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/A5 ECU Cover - Matte Black

ES#3739793 - 028799ECS01 - Audi B9 A4/A5 ECU Cover - Matte Black - Compliment your engine bay and hide away the exposed ECU - ECS - Audi

Compliment your engine bay and hide away the exposed ECU affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3739793
Mfg#:
028799ECS01
Ships on Jun 25, 2026
Auto Notify
ON SALE! SAVE 25%
$101.99

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

$76.43 USD
Free Shipping
on orders $49 and up
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2718328
Mfg#:
003621ECS01A
In Stock
ON SALE! SAVE 30%
$96.99

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

$67.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

Brand:
ECS - Corporate Logo
ES#:
3468626
Mfg#:
024985ECS01
Ships on Jul 7, 2026
Auto Notify
ON SALE! SAVE 17%
$98.99

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

$82.49 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits Manual and DSG Transmissions

Brand:
ECS - Corporate Logo
ES#:
3610307
Mfg#:
023780ECS02KT
Ships in 2 Business Days
ON SALE! SAVE 10%
$327.99

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

$296.10 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B7 A4 2.0T Cat Back Exhaust System & Luft-Technik Intake System - Manual Transmission

ES#4751120 - 010076ECS01EBKT - Audi B7 A4 2.0T Cat Back Exhaust System & Luft-Technik Intake System - Manual Transmission - Transform the sound and performance of your vehicle with a cat-back and a Luft-Technik Intake System - Enthusiast Bundles - Audi

Transform the sound and performance of your vehicle with a cat-back and a Luft-Technik Intake 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
Fits vehicles with manual transmission only

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751120
Mfg#:
010076ECS01EBKT
In Stock
ON SALE! SAVE 23%
$1827.97

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

$1399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Oil Filter Housing Kit - Black Anodized

ES#2723777 - 003602ECS01A02A - Billet Aluminum Oil Filter Housing Kit - Black Anodized - Aluminum oil filter housing replacement for plastic OE housing - ECS - Audi Volkswagen

Aluminum oil filter housing replacement for plastic OE housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2723777
Mfg#:
003602ECS01A02A
In Stock
ON SALE!
$141.99

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

$134.89 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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