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Audi A4 Engine Parts & Accessories

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Pressure Control Valve Gasket

ES#4770409 - 06H103484A - Pressure Control Valve Gasket - Ensure a proper seal for the PCV or oil separator - Elring - Audi Volkswagen

Ensure a proper seal for the PCV or oil separator 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
4770409
Mfg#:
06H103484A
In Stock at Vendor
$29.99

This product was last offered at the strikethrough price on
02-23-2026

$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Bypass Line

ES#3086863 - 8W0121081AN - Coolant Expansion Tank Bypass Line - A line that recycles overflown fluid back into the system - Genuine Volkswagen Audi - Audi

A line that recycles overflown fluid back into the system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3086863
Mfg#:
8W0121081AN
In Stock
9% off MSRP

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

$76.67

This product was last offered at the strikethrough price on
07-27-2026

$69.40 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

ES#4069386 - 06E906265Q - Rear Oxygen Sensor - Priced Each - Fits left and right side - Bosch - Audi

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

Brand:
Bosch - Corporate Logo
ES#:
4069386
Mfg#:
06E906265Q
In Stock
$192.18 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) Repair Kit

ES#3659030 - 06h103495ahktKT - Pressure Control Valve (PCV) Repair Kit - Also called the "breather valve" or "oil separator". Located on top of the valve cover. - Assembled By ECS - Audi Volkswagen

Also called the "breather valve" or "oil separator". Located on top of the valve cover. 10X Entries For Our 25th Anniversary Sweepstakes!
Fits up to production date 3/31/2012 - Please check existing part number before ordering

Brand:
Assembled By ECS - Corporate Logo
ES#:
3659030
Mfg#:
06H103495AHKTKT
In Stock
ON SALE!
$90.51

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

$87.88 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 10X Entries For Our 25th Anniversary Sweepstakes!
Fits Manual and DSG Transmissions

Brand:
ECS - Corporate Logo
ES#:
3610307
Mfg#:
023780ECS02KT
In Stock
ON SALE! SAVE 10%
$334.00

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

$300.96 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Radiator Support Cover

ES#4220120 - 034-1ZZ-1005 - Carbon Fiber Radiator Support Cover - Designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave, that is perfectly matched to their X34 Carbon Fiber Air Intake. - 034Motorsport - Audi

Designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave, that is perfectly matched to their X34 Carbon Fiber Air Intake.

Brand:
034Motorsport - Corporate Logo
ES#:
4220120
Mfg#:
034-1ZZ-1005
In Stock
$324.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Waste Gate Frequency Control N75 Valve

ES#257544 - 06F906283F - Waste Gate Frequency Control N75 Valve - Controls the boost pressure on turbocharger systems - Genuine Volkswagen Audi - Audi Volkswagen

Controls the boost pressure on turbocharger systems

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
257544
Mfg#:
06F906283F
In Stock
17% off MSRP

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

$83.31

This product was last offered at the strikethrough price on
07-27-2026

$68.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Remanufactured Cylinder Head Overhaul Kit

ES#4039656 - 06H103264BKT - Complete Remanufactured Cylinder Head Overhaul Kit - Price includes a $455.00 refundable core charge. A complete engine overhaul for a case of an unfortunate turn of events, ultimately leading to bent valves - Assembled By ECS - Audi

Price includes a $455.00 refundable core charge. A complete engine overhaul for a case of an unfortunate turn of events, ultimately leading to bent valves 10X Entries For Our 25th Anniversary Sweepstakes!
Fits models with CPMA, CPMB engine codes only - Fits up to VIN 7/1/2013

Brand:
Assembled By ECS - Corporate Logo
ES#:
4039656
Mfg#:
06H103264BKT
Ships in 8 Business Days
ON SALE!
$4256.99

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

$4207.38 USD
This product is lifetime replacement eligible Partial Replacement

N205 Valve - Set Of 8

ES#4840157 - 06H103697CSET8 - N205 Valve - Set Of 8 - Valve that controls cam adjustment - Hamburg Tech - Audi

Valve that controls cam adjustment We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4840157
Mfg#:
06H103697CSET8
Ships in 1 Business Day
$465.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Piston Cooling Nozzle Control Valve (N522)

ES#4766167 - 06K115243AB - Piston Cooling Nozzle Control Valve (N522) - Controls oil flow to oil spray nozzles - Bremmen Parts - Audi Volkswagen

Controls oil flow to oil spray nozzles 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4766167
Mfg#:
06K115243AB
In Stock
ON SALE! SAVE 20%
$85.99

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

$68.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Washer Fluid Reservoir Cap - Black

ES#2804144 - 1K0955455 - Washer Fluid Reservoir Cap - Black - Set your engine bay apart from the rest with a black washer reservoir cap to replace the old blue one - Bremmen Parts - Audi Volkswagen

Set your engine bay apart from the rest with a black washer reservoir cap to replace the old blue one 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
2804144
Mfg#:
1K0955455
In Stock
ON SALE! SAVE 16%
$19.99

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

$16.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Spark Plug - Set Of Four

ES#2731877 - 06H905601AKT - Spark Plug - Set Of Four - Keep your engine running smooth with factory NGK recommended plugs - Genuine Volkswagen Audi - Audi Volkswagen

Keep your engine running smooth with factory NGK recommended plugs

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2731877
Mfg#:
06H905601AKT
In Stock
$81.99

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

$80.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

VWR Billet Brake Fluid Cap

ES#4040602 - VWR19G707 - VWR Billet Brake Fluid Cap - Replace your brake fluid reservoir cap for improved pressure equalization and stunning appearance. - Racingline - Audi Volkswagen

Replace your brake fluid reservoir cap for improved pressure equalization and stunning appearance.

Brand:
Racingline - Corporate Logo
ES#:
4040602
Mfg#:
VWR19G707
Ships in 2 Business Days
$103.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Silicone Sealant - 100 Grams

ES#463634 - D154103A1 - Silicone Sealant - 100 Grams - Useful for making many different gaskets - Genuine Volkswagen Audi - Audi Volkswagen

Useful for making many different gaskets

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
463634
Mfg#:
D154103A1
In Stock
4% off MSRP

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

$123.32

This product was last offered at the strikethrough price on
07-27-2026

$118.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

S3 K04 Turbocharger Kit

ES#1306592 - T2100009 - S3 K04 Turbocharger Kit - B8 gains up to 158HP on 93 octane - APR - Audi

B8 gains up to 158HP on 93 octane Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!

For vehicles up to the 2012 model year - For models without existing APR software

Brand:
APR - Corporate Logo
ES#:
1306592
Mfg#:
T2100009
Ships in 5 Business Days
11% off MSRP

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

$4668.99

This product was last offered at the strikethrough price on
07-27-2026

$4149.99 USD
Free Shipping

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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