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Audi A4 Most Popular Parts

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Forged Narrow Superlite 6R Front Brake Kit - 12.88"

ES#3701618 - 140-14487-R - Forged Narrow Superlite 6R Front Brake Kit - 12.88" - Featuring red 6R six piston caliper and 12.88" GT slotted rotors - Delivers the ultimate combination for braking power and style! - Wilwood - Audi

Featuring red 6R six piston caliper and 12.88" GT slotted rotors - Delivers the ultimate combination for braking power and style! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wilwood - Corporate Logo
ES#:
3701618
Mfg#:
140-14487-R
In Stock at Vendor
$2217.99 USD
This product is lifetime replacement eligible Lifetime Replacement

1.8T Billet Aluminum Fuel Injector Cup Replacement Kit

ES#4920295 - 045960LA03KT - 1.8T Billet Aluminum Fuel Injector Cup Replacement Kit - Upgrade to heavy-duty billet aluminum construction for maximum durability! - ECS - Audi Volkswagen

Upgrade to heavy-duty billet aluminum construction for maximum durability! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles with Engine Codes ATW and AWM.

Brand:
ECS - Corporate Logo
ES#:
4920295
Mfg#:
045960LA03KT
Ships in 4 Business Days
ON SALE! SAVE 20%
$172.99

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

$138.39 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Performance S-Type Cat-Back Exhaust System

ES#3690066 - 140761BC - Performance S-Type Cat-Back Exhaust System - 2.00", 2.75", & 3.00" diameter stainless steel tubing with dual exit, 4" single black/chrome tips - Borla - Audi

2.00", 2.75", & 3.00" diameter stainless steel tubing with dual exit, 4" single black/chrome tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Borla - Corporate Logo
ES#:
3690066
Mfg#:
140761BC
Ships on Jul 6, 2026
$2213.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Road+ (Semi-Resonated)

ES#3176673 - SSXAU612 - Cat-Back Exhaust System - Road+ (Semi-Resonated) - 2.76" stainless steel with dual GT100 polished tips - Milltek Sport - Audi

2.76" stainless steel with dual GT100 polished tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
3176673
Mfg#:
SSXAU612
Ships in 4 Business Days
$2213.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust - Semi Resonated

ES#4159848 - B9A4SEMIRESONATE - Cat-Back Exhaust - Semi Resonated - 2.76" stainless steel with your choice of tip style - Milltek Sport - Audi

2.76" stainless steel with your choice of tip style affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4159848
Mfg#:
B9A4SEMIRESONATE
Ships in 3 Business Days
Starting at $2213.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

P34 Cold Air Intake System

ES#3419046 - 034-108-1012 - P34 Cold Air Intake System - Delivers improved power, sound, and acceleration to B9 Audi A4/Allroad & A5 owners in a clean OEM+ package. - 034Motorsport - Audi

Delivers improved power, sound, and acceleration to B9 Audi A4/Allroad & A5 owners in a clean OEM+ package. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles without a MAF sensor

Brand:
034Motorsport - Corporate Logo
ES#:
3419046
Mfg#:
034-108-1012
In Stock
$553.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Bolt - Priced Each

ES#279975 - 06B103831J - Valve Cover Bolt - Priced Each - Used to secure the valve cover to the cylinder head - Genuine Volkswagen Audi - Audi Volkswagen

Used to secure the valve cover to the cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279975
Mfg#:
06B103831J
In Stock
54% off MSRP

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

$19.48

This product was last offered at the strikethrough price on
02-24-2026

$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Axle Delete Plug Set - Audi B5/B6/B7 - M16 Thread

ES#4375715 - 012417LA01 - Front Axle Delete Plug Set - Audi B5/B6/B7 - M16 Thread - Easily allows the removal of front axles when converting your B5/B6/B7 to RWD (rear wheel drive) from Quattro - ECS - Audi

Easily allows the removal of front axles when converting your B5/B6/B7 to RWD (rear wheel drive) from Quattro affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From VIN 8D-1-050001, split is in the 2001 model year

Brand:
ECS - Corporate Logo
ES#:
4375715
Mfg#:
012417LA01
Ships on Aug 3, 2026
Auto Notify
ON SALE! SAVE 25%
$133.99

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

$100.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RacingLine Higher Output Ignition Coils - Red - Set of Four

ES#4708317 - VWR900001-4KT - RacingLine Higher Output Ignition Coils - Red - Set of Four - Delivers greater energy output, ensuring a stronger and more consistent spark. A simple plug-and-play upgrade over the OE factory coils. - Racingline - Audi Volkswagen

Delivers greater energy output, ensuring a stronger and more consistent spark. A simple plug-and-play upgrade over the OE factory coils. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Racingline - Corporate Logo
ES#:
4708317
Mfg#:
VWR900001-4KT
Ships in 2 Business Days
$220.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Clutch Masters FX400 Clutch Kit & Single Mass Flywheel

ES#3979038 - 02390-HDCL-SK - Clutch Masters FX400 Clutch Kit & Single Mass Flywheel - Features a Heavy duty pressure plate, Full-face ceramic lined sprung clutch disc, and a Steel Single Mass Flywheel - Clutch Masters - Audi

Features a Heavy duty pressure plate, Full-face ceramic lined sprung clutch disc, and a Steel Single Mass Flywheel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Clutch Masters - Corporate Logo
ES#:
3979038
Mfg#:
02390-HDCL-SK
Ships in 8 Business Days
15% off MSRP

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

$2598.99

This product was last offered at the strikethrough price on
06-17-2026

$2208.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Motylgear Manual Transmission / Differential Fluid (75w-90) - 1 Liter

ES#261389 - 317011 - Motylgear Manual Transmission / Differential Fluid (75w-90) - 1 Liter - Technosynthese Semi-synthetic high performance GL-4 / GL-5 gear oil specially recommended for hard to shift gearboxes - Motul - Audi BMW Volkswagen MINI Porsche

Technosynthese Semi-synthetic high performance GL-4 / GL-5 gear oil specially recommended for hard to shift gearboxes affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motul - Corporate Logo
ES#:
261389
Mfg#:
317011
Ships on Jul 7, 2026
Auto Notify
10% off MSRP

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

$20.44

This product was last offered at the strikethrough price on
06-17-2026

$18.40 USD
Free Shipping
on orders $49 and up

Rear RedStuff Performance Brake Pad Set

ES#520352 - DP31470C - Rear RedStuff Performance Brake Pad Set - High performance street pad, featuring Kevlar technology - EBC - Audi Volkswagen

High performance street pad, featuring Kevlar technology affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

For use with the Stage 2 Big Brake Kit

Brand:
EBC - Corporate Logo
ES#:
520352
Mfg#:
DP31470C
In Stock at Vendor
5% off MSRP

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

$193.99

This product was last offered at the strikethrough price on
06-17-2026

$183.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Main Bearing Kit - Set Of Ten

ES#3690161 - 06h198591j - Main Bearing Kit - Set Of Ten - Complete set of 10 half-shells - For models with yellow paint markings - Kolbenschmidt - Audi Volkswagen

Complete set of 10 half-shells - For models with yellow paint markings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Kolbenschmidt - Corporate Logo
ES#:
3690161
Mfg#:
06H198591J
In Stock
$68.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Control Unit

ES#2192934 - 8K2907115AG - Engine Control Unit - Brand new with no core charge - Genuine Volkswagen Audi - Audi

Brand new with no core charge affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For the 2011 & 2012 model year only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2192934
Mfg#:
8K2907115AG
Ships in 3 Business Days
4% off MSRP

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

$2301.99

This product was last offered at the strikethrough price on
06-17-2026

$2203.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Timing Belt Kit - Ultimate

ES#6143 - B6A4UTBKLV - Timing Belt Kit - Ultimate - Everything you need for a complete timing belt job on your 1.8T. Buy it all together & save. - Assembled By ECS - Audi

Everything you need for a complete timing belt job on your 1.8T. Buy it all together & save. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From VIN 8E-4-191001, split is in the 2004 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
6143
Mfg#:
B6A4UTBKLV
In Stock
ON SALE!
$236.99

This product was last offered at the strikethrough price on
04-08-2026

$220.35 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Locking Hex Bolt - Priced Each

ES#11959 - N0199261 - Locking Hex Bolt - Priced Each - Secures the driveshaft to the transmission and rear differential flange shafts. M8x48 - Genuine Volkswagen Audi - Audi

Secures the driveshaft to the transmission and rear differential flange shafts. M8x48 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
11959
Mfg#:
N0199261
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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