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Audi A4 Engine Parts & Accessories

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Idler Pulley

ES#2090916 - 078121235G - Idler Pulley - Provides mounting for the fan clutch - MTC - Audi Volkswagen

Provides mounting for the fan clutch

Brand:
MTC - Corporate Logo
ES#:
2090916
Mfg#:
078121235G
Ships in 6 Business Days
$126.99 USD
Free Shipping

Coil Pack - Set Of Six

ES#3220408 - 06c905115mkt3 - Coil Pack - Set Of Six - Restore performance and clear trouble codes. - Delphi - Audi

Restore performance and clear trouble codes.

Brand:
Delphi - Corporate Logo
ES#:
3220408
Mfg#:
06C905115MKT3
Ships in 1-2 days
$260.99

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

$252.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#3969908 - 8w0121405fKT1 - Expansion Tank Replacement Kit - Install a brand new expansion tank with a new cap and hardware - Genuine Volkswagen Audi - Audi

Install a brand new expansion tank with a new cap and hardware Fits from production date 11/13/2017 up to 1/14/2019

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3969908
Mfg#:
8W0121405FKT1
Ships in 2 Business Days
$252.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Cooler Gasket

ES#2800396 - 06J117070C - Engine Oil Cooler Gasket - Connects oil cooler to oil filter housing - Ajusa - Audi Volkswagen

Connects oil cooler to oil filter housing

Brand:
Ajusa - Corporate Logo
ES#:
2800396
Mfg#:
06J117070C
In Stock
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Kit

ES#2538546 - 058905105KT - Ignition Service Kit - Includes four Beru coil packs and four NGK spark plugs - Assembled By ECS - Audi Volkswagen

Includes four Beru coil packs and four NGK spark plugs 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2538546
Mfg#:
058905105KT
Ships in 1 Business Day
$265.99

This product was last offered at the strikethrough price on
04-09-2026

$251.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

PCV Service Kit

ES#4829950 - 06K103495BLKT1 - PCV Service Kit - Everything you need to replace a faulty PCV or to perform some preventative maintenance - Assembled By ECS - Audi

Everything you need to replace a faulty PCV or to perform some preventative maintenance 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4829950
Mfg#:
06K103495BLKT1
Ships in 1-2 days
$300.99

This product was last offered at the strikethrough price on
06-07-2026

$251.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Billet Oil Cap - Clear

ES#4165016 - VTT-VAG-OILCAPC - Billet Oil Cap - Clear - Billet aluminum oil cap to spice up your engine bay. - Vargas Turbo Technologies - Audi Volkswagen Porsche

Billet aluminum oil cap to spice up your engine bay. 2X Entries Into Our F80 M3 Sweepstakes
For vehicles up through the 2020 model year only

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4165016
Mfg#:
VTT-VAG-OILCAPC
Ships in 1 Business Day
$62.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Oil Cap - Purple

ES#4165017 - VTT-VAG-OILCAPP - Billet Oil Cap - Purple - Billet aluminum oil cap to spice up your engine bay. - Vargas Turbo Technologies - Audi Volkswagen Porsche

Billet aluminum oil cap to spice up your engine bay. 2X Entries Into Our F80 M3 Sweepstakes
For vehicles up through the 2020 model year only

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4165017
Mfg#:
VTT-VAG-OILCAPP
Ships in 4 Business Days
$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Gasket

ES#1596862 - 058103383q - Cylinder Head Gasket - Stop leaks and restore engine power - Victor Reinz - Audi Volkswagen

Stop leaks and restore engine power

Brand:
Victor Reinz - Corporate Logo
ES#:
1596862
Mfg#:
058103383Q
Ships in 1 Business Day
$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Crankshaft Seal

ES#4342806 - 079103051F - Rear Crankshaft Seal - Also referred to as the rear main seal - Febi - Audi Volkswagen

Also referred to as the rear main seal We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4342806
Mfg#:
079103051F
Ships on Oct 8, 2026
Auto Notify
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Self-Locking Nut - Priced Each

ES#4817 - N90369001 - Self-Locking Nut - Priced Each - Install new hardware with your new parts. M10 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M10 Secures the catalytic converter to the turbocharger

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4817
Mfg#:
N90369001
In Stock
31% off MSRP

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

$17.45

This product was last offered at the strikethrough price on
07-08-2026

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 3

ES#2608083 - 06B121132EKT2 - Cooling System Refresh Kit - Level 3 - Replace critical cooling system components and perform a proper coolant system flush - Assembled By ECS - Audi

Replace critical cooling system components and perform a proper coolant system flush 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2608083
Mfg#:
06B121132EKT2
In Stock at Vendor
ON SALE! SAVE 12%
$284.99

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

$251.08 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Emissions Service Kit

ES#2219669 - 06A103213F - Emissions Service Kit - Complete PCV Refresh Kit for your engine - Assembled By ECS - Audi

Complete PCV Refresh Kit for your engine 10X Entries Into Our F80 M3 Sweepstakes
Up to VIN 8E-3-040000, split is in the 2003 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2219669
Mfg#:
06A103213F
Ships in 4 Business Days
ON SALE!
$255.99

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

$250.38 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Washer - Priced Each

ES#470401 - N90646702 - Washer - Priced Each - Install new hardware with your new parts. 8.4x29x1.6 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. 8.4x29x1.6 Used in securing the engine mounts to the upper brackets

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470401
Mfg#:
N90646702
In Stock
$4.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Counterhold - Vibration Damper

ES#2863408 - T10355A - Counterhold - Vibration Damper - Used for counterholding vibration damper when center bolt for crankshaft is loosened or tightened - Genuine Volkswagen Audi - Audi Volkswagen

Used for counterholding vibration damper when center bolt for crankshaft is loosened or tightened

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2863408
Mfg#:
T10355A
In Stock
ON SALE! SAVE 50%
$249.99

This product was last offered at the strikethrough price on
05-14-2026

$125.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RaceChip XLR Throttle Controller With App Control *Open Box - New Product*

ES#4708645 - 999951 - RaceChip XLR Throttle Controller With App Control *Open Box - New Product* - Eliminate the delay in throttle response times with a simple XLR addition! Allows for Bluetooth connectivity for easy App based control. *Open Box - New Product* - Race Chip - Audi Volkswagen

Eliminate the delay in throttle response times with a simple XLR addition! Allows for Bluetooth connectivity for easy App based control. *Open Box - New Product*

Brand:
Race Chip - Corporate Logo
ES#:
4708645
Mfg#:
999951
In Stock
ON SALE! SAVE 16%
$299.00

This product was last offered at the strikethrough price on
07-28-2026

$250.00 USD
Free Shipping
on orders $49 and up

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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