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Audi A4 Most Popular Parts

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Performance Valve Spring/Retainer Kit

ES#2794008 - IEVTVC3 - Performance Valve Spring/Retainer Kit - High quality performance valve springs and titanium retainers - Integrated Engineering - Audi Volkswagen

High quality performance valve springs and titanium retainers

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794008
Mfg#:
IEVTVC3
In Stock
$663.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Rear Differential Mount Insert Kit

ES#2992521 - 008288ecs01KT - Complete Rear Differential Mount Insert Kit - Increase drivetrain rigidity and response! - ECS - Audi Porsche

Increase drivetrain rigidity and response! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2992521
Mfg#:
008288ECS01KT
In Stock
ON SALE! SAVE 30%
$196.99

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

$137.89 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Brisk Silver Racing ER10S Spark Plugs - Set Of Four

ES#3691031 - er10sKT - Brisk Silver Racing ER10S Spark Plugs - Set Of Four - Featuring silver fine wire center electrode - Superior ignition ability increases engine power! - Brisk - Audi Volkswagen

Featuring silver fine wire center electrode - Superior ignition ability increases engine power! Two heat ranges colder than stock with a non-projected tip

Brand:
Brisk - Corporate Logo
ES#:
3691031
Mfg#:
ER10SKT
In Stock
$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

ES#4487999 - 003353ECS02 - Build Your Own Audi B8 A4 2.0T Dual Exit Valved Cat Back Exhaust System - Maximum Turbo Back gains of +27 WHP and +46 WTQ of torque when equipped with APR Stage 2 ECU software and ECS Luft-Technik Intake, FMIC and Charge Pipes - ECS - Audi

Maximum Turbo Back gains of +27 WHP and +46 WTQ of torque when equipped with APR Stage 2 ECU software and ECS Luft-Technik Intake, FMIC and Charge Pipes 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4487999
Mfg#:
003353ECS02
In Stock
ON SALE!
Starting at $1204.23 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

3.5" High Flow Catalytic Converter

ES#2960018 - 034-105-4023 - 3.5" High Flow Catalytic Converter - Complete drop-in upgrade will bolt up to stock/Stock Fit Turbo - 034Motorsport - Audi

Complete drop-in upgrade will bolt up to stock/Stock Fit Turbo 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2960018
Mfg#:
034-105-4023
Back Ordered
$449.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport Springs - Set

ES#3187941 - 50357 - Sport Springs - Set - Finally, A performance lowering spring for your B9 chassis Audi - Offering unrivaled comfort and performance - H&R - Audi

Finally, A performance lowering spring for your B9 chassis Audi - Offering unrivaled comfort and performance We Price Match - Give Us A Call or Chat!
Average lowering of .80" front and rear for models with factory sport suspension. Average lowering of 1.6" front and rear for models without factory sport suspension

Brand:
H&R - Corporate Logo
ES#:
3187941
Mfg#:
50357
In Stock
15% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$489.00

This product was last offered at the strikethrough price on
10-01-2026

$415.65 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" Style 881 Wheels - Set Of Four

ES#2598318 - 881AKT - 18" Style 881 Wheels - Set Of Four - 18"x8.5" ET45 5x112 57.1CB - Hyper Silver/Machined Lip - Alzor - Audi Volkswagen

18"x8.5" ET45 5x112 57.1CB - Hyper Silver/Machined Lip 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Alzor - Corporate Logo
ES#:
2598318
Mfg#:
881AKT
Ships on Jan 11, 2027
ON SALE!
$883.26 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Camshaft Adjuster Magnet

ES#3188034 - 06L109259AKT - Camshaft Adjuster Magnet - Stop oil leaks and replace the adjuster magnet in your vehicle - Febi - Audi Volkswagen

Stop oil leaks and replace the adjuster magnet in your vehicle We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
3188034
Mfg#:
06L109259AKT
Ships in 4 Business Days
$62.42

This product was last offered at the strikethrough price on
10-22-2026

$50.75 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

KW V3 Series Coilover Kit

ES#2092354 - 35210075 - KW V3 Series Coilover Kit - The ultimate in coilover technology featuring double adjustable dampening - KW Suspension - Audi

The ultimate in coilover technology featuring double adjustable dampening Fits sedan models without factory EDC. Range of lowering is 0.8-1.5" in the front and 0.4-1.5" in the rear.

Brand:
KW Suspension - Corporate Logo
ES#:
2092354
Mfg#:
35210075
Back Ordered
$3394.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Motul Gear 300 Manual Transmission / Differential Fluid (75w-90) - 1 Liter

ES#261741 - 317811 - Motul Gear 300 Manual Transmission / Differential Fluid (75w-90) - 1 Liter - Fully synthetic GL-4 / GL-5 gear oil, designed for high performance use - Motul - Audi BMW Volkswagen MINI Porsche

Fully synthetic GL-4 / GL-5 gear oil, designed for high performance use

Brand:
Motul - Corporate Logo
ES#:
261741
Mfg#:
317811
In Stock
10% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$37.85

This product was last offered at the strikethrough price on
11-04-2026

$34.06 USD
Free Shipping
on orders $49 and up

High Flow Aluminum Charge Pipe Kit - Audi B8 A4/A5 2.0T

ES#2785242 - 002894ECS01KT - High Flow Aluminum Charge Pipe Kit - Audi B8 A4/A5 2.0T - Increase intake air flow with aluminum charge pipes for your OEM intercooler! - ECS - Audi

Increase intake air flow with aluminum charge pipes for your OEM intercooler! 10X Entries Into Our F80 M3 Sweepstakes
For direct-fit use with factory turbocharger - Modifications may be necessary if paired with aftermarket turbocharger

Brand:
ECS - Corporate Logo
ES#:
2785242
Mfg#:
002894ECS01KT
In Stock
ON SALE! SAVE 30%
$623.99

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

$436.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 / S4 Flat Side Skirts - Gloss Black

ES#4163869 - 001734la01 - Audi B9 A4 / S4 Flat Side Skirts - Gloss Black - Enhance your side profile with an aggressive look! - ECS - Audi

Enhance your side profile with an aggressive look! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4163869
Mfg#:
001734LA01
In Stock
ON SALE! SAVE 20%
$363.99

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

$291.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Turbocharger

ES#4351760 - 06H145703S - Turbocharger - Complete assembly including the exhaust manifold - IHI Turbo - Audi

Complete assembly including the exhaust manifold From the 2013 model year

Brand:
IHI Turbo - Corporate Logo
ES#:
4351760
Mfg#:
06H145703S
In Stock
ON SALE!
$1331.99

This product was last offered at the strikethrough price on
10-29-2026

$1239.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upgraded Aluminum Water Pump Kit with Tools

ES#4752748 - 06H121026DDKTKT5 - Upgraded Aluminum Water Pump Kit with Tools - Includes a new water pump, belt, aluminum thermostat/housing, temperature sensor, aluminum union piece, hardware, and the tools - Assembled By ECS - Audi Volkswagen

Includes a new water pump, belt, aluminum thermostat/housing, temperature sensor, aluminum union piece, hardware, and the tools 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4752748
Mfg#:
06H121026DDKTKT5
In Stock
ON SALE! SAVE 20%
$314.99

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

$250.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ultimate Timing Chain Kit

ES#3971144 - 06K109158AKT4 - Ultimate Timing Chain Kit - Includes all chains, tensioners, guide rails and securing hardware - Assembled By ECS - Audi

Includes all chains, tensioners, guide rails and securing hardware 10X Entries Into Our F80 M3 Sweepstakes
From production date 8/27/2012 up to 7/1/2013

Brand:
Assembled By ECS - Corporate Logo
ES#:
3971144
Mfg#:
06K109158AKT4
In Stock
ON SALE! SAVE 28%
$376.99

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

$272.26 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter - Priced Each

ES#3439121 - 06L115562B - Oil Filter - Priced Each - Keep your oil clean and your engine running like new - Genuine Volkswagen Audi - Audi Volkswagen Porsche

Keep your oil clean and your engine running like new

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3439121
Mfg#:
06L115562B
In Stock
13% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$17.15

This product was last offered at the strikethrough price on
11-04-2026

$14.99 USD
Free Shipping
on orders $49 and up

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