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Audi A4 Most Popular Parts

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Performance Cold Air Intake System

ES#3245919 - IEINCK1 - Performance Cold Air Intake System - Add power, performance, and style to your B9 A4/A5 2.0T engine! - Integrated Engineering - Audi

Add power, performance, and style to your B9 A4/A5 2.0T engine! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3245919
Mfg#:
IEINCK1
Ships in 1 Business Day
$419.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RA4 Clutch Conversion Kit - Stage 1

ES#2739501 - 002948ECS01KT - RA4 Clutch Conversion Kit - Stage 1 - ECS RA4 Lightweight Flywheel with the Audi RS4 clutch kit rated at 314ft/lbs - ECS - Audi

ECS RA4 Lightweight Flywheel with the Audi RS4 clutch kit rated at 314ft/lbs 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2739501
Mfg#:
002948ECS01KT
In Stock
ON SALE!
$1172.99

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

$1114.34 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Street Shield Aluminum Skid Plate Kit

ES#2771379 - 003251ECS01AKTKT - ECS Tuning Street Shield Aluminum Skid Plate Kit - Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8 chassis A4/S4/A5/S5 models up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
2771379
Mfg#:
003251ECS01AKTKT
In Stock
ON SALE! SAVE 10%
$416.99

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

$375.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Spark Plugs - Set Of Four

ES#2762373 - 06K905601BKT - Spark Plugs - Set Of Four - NGK revision of genuine plugs - Genuine Volkswagen Audi - Audi Volkswagen

NGK revision of genuine plugs

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2762373
Mfg#:
06K905601BKT
In Stock
$54.00 USD
Free Shipping
on orders $49 and up
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
07-20-2026

$34.06 USD
Free Shipping
on orders $49 and up

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 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
3188034
Mfg#:
06L109259AKT
In Stock
$84.66

This product was last offered at the strikethrough price on
03-17-2026

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

Ultimate High Pressure Fuel Pump Upgrade Kit

ES#2873046 - 012570ecs01KT - Ultimate High Pressure Fuel Pump Upgrade Kit - Common fix for P2294 CEL code. New OE fuel pump with Autotech internal upgrades pre-installed and includes new cam follower with replacement hardware - Assembled By ECS - Audi Volkswagen

Common fix for P2294 CEL code. New OE fuel pump with Autotech internal upgrades pre-installed and includes new cam follower with replacement hardware 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2873046
Mfg#:
012570ECS01KT
In Stock
$841.95 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

D1S 6500K XB Xenon Bulb - Pair

ES#4212776 - MM.N.074 - D1S 6500K XB Xenon Bulb - Pair - Quality replacement xenon bulbs from Morimoto - Morimoto - Audi BMW Volkswagen Mercedes Benz MINI

Quality replacement xenon bulbs from Morimoto

Brand:
Morimoto - Corporate Logo
ES#:
4212776
Mfg#:
MM.N.074
In Stock
$89.04 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Kit - Select Plus

ES#4623806 - CKP0233 - Timing Chain Kit - Select Plus - Includes chains, tensioners, rails, timing covers, cam bridge, cam adjuster, oil pump chain & tensioner, oil pan, drive belt, gasket sealant and necessary hardware - Rein - Audi

Includes chains, tensioners, rails, timing covers, cam bridge, cam adjuster, oil pump chain & tensioner, oil pan, drive belt, gasket sealant and necessary hardware 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
From production date 7/1/2013

Brand:
Rein - Corporate Logo
ES#:
4623806
Mfg#:
CKP0233
In Stock
$936.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B7 A4 2.0T Cat Back Exhaust System - Manual Transmission

ES#4487916 - 010076ECS - Audi B7 A4 2.0T Cat Back Exhaust System - Manual Transmission - ECS evolutionary design and manufacturing, blending with raw emotion, desire and passion, creating a truly unique driving experience - ECS - Audi

ECS evolutionary design and manufacturing, blending with raw emotion, desire and passion, creating a truly unique driving experience 10X Entries For Our 25th Anniversary Sweepstakes!
Fits vehicles with manual transmission only

Brand:
ECS - Corporate Logo
ES#:
4487916
Mfg#:
010076ECS
In Stock
ON SALE!
Starting at $936.89 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Bearing - Priced Each

ES#2731848 - 4H0498625A - Wheel Bearing - Priced Each - Fits the left and right side. Includes new hardware. - FAG - Audi Porsche

Fits the left and right side. Includes new hardware.

Brand:
FAG - Corporate Logo
ES#:
2731848
Mfg#:
4H0498625A
In Stock
$150.99

This product was last offered at the strikethrough price on
06-04-2026

$118.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

440cc Fuel Injectors - Set Of Four

ES#1866540 - 0280155968 - 440cc Fuel Injectors - Set Of Four - A drop-in injector commonly referred to as 'Green Giants' - Bosch - Audi Volkswagen

A drop-in injector commonly referred to as 'Green Giants' 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
1866540
Mfg#:
0280155968
In Stock
$167.99 USD
Free Shipping
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 For Our 25th Anniversary 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 23%
$490.99

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

$376.61 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B9 A4 / S4 Lowering Spring Set

ES#4714528 - 051204LA01-A - B9 A4 / S4 Lowering Spring Set - Dramatically improve looks and handling with and average lowering up to 1.5" front and rear. - ECS - Audi

Dramatically improve looks and handling with and average lowering up to 1.5" front and rear. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4714528
Mfg#:
051204LA01-A
In Stock
ON SALE! SAVE 10%
$315.99

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

$284.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034 Billet Aluminum Rear Main Seal Upgrade - With Installation Tool & Sealant

ES#4608304 - 034-202-6004KT - 034 Billet Aluminum Rear Main Seal Upgrade - With Installation Tool & Sealant - Permanent fix for that leaking rear main seal. Includes recommended installation tool and Dirko sealant to complete the job. - Assembled By ECS - Audi Volkswagen

Permanent fix for that leaking rear main seal. Includes recommended installation tool and Dirko sealant to complete the job. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4608304
Mfg#:
034-202-6004KT
Ships on Sep 22, 2026
Auto Notify
$233.99

This product was last offered at the strikethrough price on
03-16-2026

$179.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

ECS Wheel Spacer & Bolt Kit - 10mm With Black Ball Seat Bolts

ES#2748191 - 00240302A10KT3 - ECS Wheel Spacer & Bolt Kit - 10mm With Black Ball Seat Bolts - Includes everything you need to install spacers on two wheels - ECS - Audi Volkswagen

Includes everything you need to install spacers on two wheels 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2748191
Mfg#:
00240302A10KT3
Ships in 4 Business Days
ON SALE! SAVE 25%
$197.93

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

$148.45 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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