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Audi A4 Engine Parts & Accessories

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Underdrive Lightweight Crank Pulley

ES#4500890 - CTS-HW-0099-B8E - Underdrive Lightweight Crank Pulley - Less rotational mass means more power! - CTS - Audi

Less rotational mass means more power! For vehicles with electric power steering

Brand:
CTS - Corporate Logo
ES#:
4500890
Mfg#:
CTS-HW-0099-B8E
Special Order: No Guaranteed ETA
$199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#4342719 - 06H103495AE - Pressure Control Valve (PCV) - Also referred to as the breather valve or oil separator - Febi - Audi

Also referred to as the breather valve or oil separator We Price Match - Give Us A Call or Chat!
Fits from production date 3/31/2012 - Please check existing part number before ordering

Brand:
Febi - Corporate Logo
ES#:
4342719
Mfg#:
06H103495AE
Ships on Nov 25, 2026
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Knock Sensor - Blue Connector - Priced Each

ES#2162503 - 06C905377 - Knock Sensor - Blue Connector - Priced Each - Detects engine ping for timing adjustment - Continental - Audi Volkswagen

Detects engine ping for timing adjustment We Price Match - Give Us A Call or Chat!

Brand:
Continental - Corporate Logo
ES#:
2162503
Mfg#:
06C905377
Ships in 1 day
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil - Priced Each

Keep your engine running smooth

Brand:
Hitachi - Corporate Logo
ES#:
5411646
Mfg#:
06L905110K
Back Ordered
$49.99 USD
Free Shipping
on orders $49 and up

Transmission Mount - Priced Each

ES#2872412 - 8D0399151R - Transmission Mount - Priced Each - Fits the left and right side - Febi - Audi Volkswagen

Fits the left and right side We Price Match - Give Us A Call or Chat!
From VIN 8E-2-350001, split is in the 2002 model year

Brand:
Febi - Corporate Logo
ES#:
2872412
Mfg#:
8D0399151R
Ships in 1 Business Day
$31.99

This product was last offered at the strikethrough price on
04-16-2026

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Washer Fluid Reservoir Cap

ES#3182234 - 3Q0955455 - Washer Fluid Reservoir Cap - Covers the washer fluid reservoir fill neck and locks open for ease of use - Genuine Volkswagen Audi - Audi Volkswagen

Covers the washer fluid reservoir fill neck and locks open for ease of use

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3182234
Mfg#:
3Q0955455
Ships in 2 Business Days
9% off MSRP

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

$21.99

This product was last offered at the strikethrough price on
08-30-2026

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Anti-Theft Service

ES#2063652 - APRTHEFT-SRV - Anti-Theft Service - *Sale applies only to ECU with 3 or 4 program purchase. - APR - Audi Volkswagen

*Sale applies only to ECU with 3 or 4 program purchase. Call In Or Chat For Best Price!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
2063652
Mfg#:
APRTHEFT-SRV
In Stock
$199.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Pump

ES#2813124 - 078115105D - Engine Oil Pump - Keeps oil flowing through the engine - Hamburg Tech - Audi Volkswagen

Keeps oil flowing through the engine We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813124
Mfg#:
078115105D
Ships in 1 Business Day
$199.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Module

ES#4159252 - 06H121026CQ - Water Pump Module - Includes the thermostat, temp sensor, and gasket - Hamburg Tech - Audi Volkswagen

Includes the thermostat, temp sensor, and gasket We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4159252
Mfg#:
06H121026CQ
Ships in 1 Business Day
$199.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Kit - Stage 1

ES#2538560 - 09485KT - Ignition Service Kit - Stage 1 - Includes plug wires and spark plugs - Assembled By ECS - Audi

Includes plug wires and spark plugs 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2538560
Mfg#:
09485KT
Ships in 1 day
$210.99

This product was last offered at the strikethrough price on
08-19-2026

$198.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Modules

ES#4415152 - 8E0201317N - Fuel Modules - VDO - Audi

We Price Match - Give Us A Call or Chat!

Brand:
VDO - Corporate Logo
ES#:
4415152
Mfg#:
8E0201317N
Ships in 1 day
$204.99

This product was last offered at the strikethrough price on
05-07-2026

$198.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Ventilation Valve

ES#283301 - 078103245E - Crankcase Ventilation Valve - "PCV" valve - Genuine Volkswagen Audi - Audi Volkswagen

"PCV" valve

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283301
Mfg#:
078103245E
Ships in 7 Business Days
7% off MSRP

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

$213.99

This product was last offered at the strikethrough price on
08-30-2026

$198.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Intercooler - Left

ES#3438758 - 8E0145805AA - Intercooler - Left - Cools the charge air for your engine - Nissens - Audi

Cools the charge air for your engine We Price Match - Give Us A Call or Chat!

Brand:
Nissens - Corporate Logo
ES#:
3438758
Mfg#:
8E0145805AA
Special Order: No Guaranteed ETA
$198.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idle Control / Stabilizer Valve

ES#11842 - 078133455A - Idle Control / Stabilizer Valve - Continental - Audi

We Price Match - Give Us A Call or Chat!

Brand:
Continental - Corporate Logo
ES#:
11842
Mfg#:
078133455A
Back Ordered
$198.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RacingLine Higher Output Ignition Coils - Grey - Set of Four

ES#4708322 - VWR900002-4KT - RacingLine Higher Output Ignition Coils - Grey - 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.

Brand:
Racingline - Corporate Logo
ES#:
4708322
Mfg#:
VWR900002-4KT
Back Ordered
Auto Notify
ON SALE! SAVE 10%
$220.99

This product was last offered at the strikethrough price on
08-29-2026

$198.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Hose - Return

ES#4818462 - 06E121082C - Oil Cooler Hose - Return - Connects the oil cooler to the hard water tube - Bremmen Parts - Audi

Connects the oil cooler to the hard water tube 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818462
Mfg#:
06E121082C
In Stock
ON SALE! SAVE 50%
$10.99

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

$5.50 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Parts & Accessories

Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.

Let us help you find the parts that fit your Audi

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Manufacturer names and/or part numbers are used only for identification purposes.

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