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Audi S4 Engine Parts & Accessories

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Upper Water Pipe

ES#4809955 - 06E121083N - Upper Water Pipe - Connects supply/return cooling lines to the supercharger - Rein - Audi

Connects supply/return cooling lines to the supercharger 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4809955
Mfg#:
06E121083N
Ships in 4 Business Days
$114.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose - Lower

ES#3235886 - 8D0121055T - Radiator Hose - Lower - Connects the lower radiator port to the thermostat housing - Gates - Audi Volkswagen

Connects the lower radiator port to the thermostat housing

Brand:
Gates - Corporate Logo
ES#:
3235886
Mfg#:
8D0121055T
Ships on Nov 20, 2026
$114.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator/Pressure Control Valve (PCV)

ES#4883740 - 06E103547AC - Oil Separator/Pressure Control Valve (PCV) - Located beneath the supercharger compressor - Rein - Audi

Located beneath the supercharger compressor 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Up to the 2012 model year

Brand:
Rein - Corporate Logo
ES#:
4883740
Mfg#:
06E103547AC
Back Ordered
$114.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Cap

ES#2535170 - 1J0121321B - Expansion Tank Cap - Keep proper pressure in your coolant system - URO - Audi Volkswagen

Keep proper pressure in your coolant system 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535170
Mfg#:
1J0121321B
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Cap / Plug - Priced Each

ES#3181 - 078103113E - Cylinder Head Cap / Plug - Priced Each - Covers the camshaft opening on the cylinder head - Victor Reinz - Audi Volkswagen

Covers the camshaft opening on the cylinder head

Brand:
Victor Reinz - Corporate Logo
ES#:
3181
Mfg#:
078103113E
In Stock
ON SALE! SAVE 31%
$4.99

This product was last offered at the strikethrough price on
08-26-2026

$3.46 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Drive Idler Pulley With Bolt

ES#3181976 - 06M903341D - Accessory Belt Drive Idler Pulley With Bolt - Replace your worn idler pulley - Genuine Volkswagen Audi - Audi

Replace your worn idler pulley

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3181976
Mfg#:
06M903341D
Ships in 3 Business Days
12% off MSRP

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

$130.00

This product was last offered at the strikethrough price on
08-31-2026

$113.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Snub Mount - Black Series

ES#4871802 - PFF3-220BLK - Performance Snub Mount - Black Series - Put your power to the ground! - Powerflex Black Series - Audi Volkswagen

Put your power to the ground!

Brand:
Powerflex Black Series - Corporate Logo
ES#:
4871802
Mfg#:
PFF3-220BLK
Ships in 2 Business Days
$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Hardware Kit

ES#3141671 - n0902612kt - Water Pump Hardware Kit - Complete hardware kit for replacing the water pump - Assembled By ECS - Audi

Complete hardware kit for replacing the water pump 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3141671
Mfg#:
N0902612KT
Ships in 1 Business Day
ON SALE! SAVE 17%
$33.99

This product was last offered at the strikethrough price on
08-28-2026

$28.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbosmart Boost Tee Manual Boost Controller - Black

ES#4430283 - TS-0101-1102 - Turbosmart Boost Tee Manual Boost Controller - Black - In-car boost controller for fine tuning - TurboSmart - Audi Volkswagen MINI Porsche

In-car boost controller for fine tuning

Brand:
TurboSmart - Corporate Logo
ES#:
4430283
Mfg#:
TS-0101-1102
In Stock at Vendor
10% off MSRP

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

$124.99

This product was last offered at the strikethrough price on
11-01-2026

$112.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front engine bay cover

ES#451208 - 8K0807081 - Front engine bay cover - Located between the front bumper and core support - Genuine Volkswagen Audi - Audi

Located between the front bumper and core support Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
451208
Mfg#:
8K0807081
Ships in 5 Business Days
10% off MSRP

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

$124.99

This product was last offered at the strikethrough price on
10-26-2026

$112.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upper Guide Rail - Priced Each

ES#5454118 - 079109470 - Upper Guide Rail - Priced Each - Upper rail that the left & right timing chains ride - URO - Audi

Upper rail that the left & right timing chains ride 2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5454118
Mfg#:
079109470
In Stock
$12.89

This product was last offered at the strikethrough price on
08-03-2026

$10.25 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Control Unit

ES#4908550 - 8D0959501D - Auxiliary Fan Control Unit - Controls the actuation of the radiator fan - Bremmen Parts - Audi

Controls the actuation of the radiator fan 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4908550
Mfg#:
8D0959501D
Special Order: No Guaranteed ETA
ON SALE! SAVE 18%
$136.99

This product was last offered at the strikethrough price on
10-08-2026

$112.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

MAF Housing Adapter - RS4

ES#2864566 - 034-108-6001 - MAF Housing Adapter - RS4 - Seamlessly install your 034Motorsport 85mm MAF Housing with a factory RS4 airbox - 034Motorsport - Audi

Seamlessly install your 034Motorsport 85mm MAF Housing with a factory RS4 airbox 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2864566
Mfg#:
034-108-6001
Back Ordered
$112.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Return

ES#3697692 - 06E121044AF - Coolant Pipe - Return - Secondary return pipe that connects to the supply pipe and the oil cooler hoses - Vaico - Audi

Secondary return pipe that connects to the supply pipe and the oil cooler hoses We Price Match - Give Us A Call or Chat!
Up to the 2012 model year

Brand:
Vaico - Corporate Logo
ES#:
3697692
Mfg#:
06E121044AF
Ships in 2 Business Days
$114.99

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

$111.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Gasket - Left

For cylinders 5-8 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
3546799
Mfg#:
079103383BB
Ships in 2 Business Days
$115.99

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

$111.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Leak Detection Pump Filter With Vent Tube

ES#3139673 - 8K0201997AM - Leak Detection Pump Filter With Vent Tube - Vent tube assembly with LDP filter - Genuine Volkswagen Audi - Audi

Vent tube assembly with LDP filter

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3139673
Mfg#:
8K0201997AM
Ships in 3 Business Days
10% off MSRP

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

$123.99

This product was last offered at the strikethrough price on
10-26-2026

$111.99 USD
Free Shipping
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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