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Audi S4 Engine Parts & Accessories

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ES#4691036 - 8W1121405N - Coolant Expansion Tank - Includes integrated coolant level sensor - Hudson - Audi

Includes integrated coolant level sensor

Brand:
Hudson - Corporate Logo
ES#:
4691036
Mfg#:
8W1121405N
Ships in 4 Business Days
$198.00

This product was last offered at the strikethrough price on
09-22-2026

$125.86 USD
Free Shipping
on orders $49 and up
ES#2957555 - WHT004793A - Vent Tube O-Ring - Priced Each - 23x3 - Seals the connection points for the vent tube between the oil separator and the supercharger - Genuine Volkswagen Audi - Audi

23x3 - Seals the connection points for the vent tube between the oil separator and the supercharger

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2957555
Mfg#:
WHT004793A
Ships in 1 day
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#472251 - WHT000265 - Pivot Pin - Secures the right side of the center guide rail - Genuine Volkswagen Audi - Audi

Secures the right side of the center guide rail From VIN 8D-4-200001, split is in the 2004 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
472251
Mfg#:
WHT000265
Ships in 1 day
11% off MSRP

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

$20.18

This product was last offered at the strikethrough price on
11-03-2026

$17.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4883350 - 06E121119J - Sealing O-Ring - Priced Each - Seals the coolant flange to the supercharger compressor - Victor Reinz - Audi

Seals the coolant flange to the supercharger compressor

Brand:
Victor Reinz - Corporate Logo
ES#:
4883350
Mfg#:
06E121119J
Ships in 1 Business Day
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#285158 - 079905377H - Knock Sensor - Blue (390mm) - Keep your engine running smoothly - Genuine Volkswagen Audi - Audi

Keep your engine running smoothly Fits left rear only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
285158
Mfg#:
079905377H
Ships in 1 day
9% off MSRP

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

$137.99

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

$124.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4214749 - 06E103148BB - Cylinder Head Gasket - Right  - Stop leaks and restore engine power - Genuine Volkswagen Audi - Audi

Stop leaks and restore engine power

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4214749
Mfg#:
06E103148BB
Ships in 1 day
13% off MSRP

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

$143.99

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

$124.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#5424335 - 06A906433C - Crankshaft Position Sensor - Also known as the RPM or speed sensor - Bremmen Parts - Audi Volkswagen

Also known as the RPM or speed sensor 10X Entries Into Our F80 M3 Sweepstakes
Manual transmission models

Brand:
Bremmen Parts - Corporate Logo
ES#:
5424335
Mfg#:
06A906433C
In Stock
ON SALE! SAVE 15%
$20.99

This product was last offered at the strikethrough price on
09-16-2026

$17.84 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2709521 - 8D0959501D - Auxiliary Fan Control Unit - Controls the actuation of the radiator fan - URO - Audi

Controls the actuation of the radiator fan 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2709521
Mfg#:
8D0959501D
Back Ordered
$124.26 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#450437 - 8K0201991AQ - Vent Tube - Runs from the charcoal canister to the main fuel lines - Genuine Volkswagen Audi - Audi

Runs from the charcoal canister to the main fuel lines

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450437
Mfg#:
8K0201991AQ
Ships in 1 day
13% off MSRP

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

$142.99

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

$123.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#259786 - N90175205 - Shouldered Nut - Priced Each - Install new hardware with your new parts. M6 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6 Secures the leak detection pump bracket to the vehicle

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
259786
Mfg#:
N90175205
Ships in 2 Business Days
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4812550 - 06M115401L - Filter Housing  - Replace the broken of leaking filter housing. - Vaico - Audi

Replace the broken of leaking filter housing. We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4812550
Mfg#:
06M115401L
In Stock
Limited Qty Sale
$156.99

This product was last offered at the strikethrough price on
09-24-2026

$122.99 USD
Free Shipping
on orders $49 and up
ES#11264 - n01508315 - Shouldered Hex Nut - Priced Each - Install new hardware with your new parts. M8 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M8 Used to secure the engine mounts (upper position)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
11264
Mfg#:
N01508315
In Stock
25% off MSRP

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

$3.99

This product was last offered at the strikethrough price on
11-03-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2718731 - 078145255H - Power Steering Pulley - Drives the power steering pump - Febi - Audi Volkswagen

Drives the power steering pump We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2718731
Mfg#:
078145255H
Back Ordered
$122.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2772341 - 06E121044AF - Coolant Pipe - Return - Secondary return pipe that connects to the supply pipe and the oil cooler hoses - Genuine Volkswagen Audi - Audi

Secondary return pipe that connects to the supply pipe and the oil cooler hoses Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2772341
Mfg#:
06E121044AF
Ships in 1 day
12% off MSRP

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

$138.99

This product was last offered at the strikethrough price on
10-05-2026

$121.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#280928 - 06E145255B - Power Steering Pump Pulley - Get rid of the squeaks and rattles - Genuine Volkswagen Audi - Audi

Get rid of the squeaks and rattles For vehicles with Servotronic (speed related variable steering assist)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280928
Mfg#:
06E145255B
Ships in 2 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.

$138.99

This product was last offered at the strikethrough price on
10-05-2026

$121.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2627557 - 025906041A - Coolant Temperature Sensor - 2 Pin - Blue sensor used by the ECU to control engine fueling - Rein - Audi Volkswagen

Blue sensor used by the ECU to control engine fueling 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2627557
Mfg#:
025906041A
In Stock at Vendor
$9.99

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

$9.36 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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