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Audi S4 Engine Parts & Accessories

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Thermostat Housing

Common point of failure for the cooling system. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5426272
Mfg#:
06M121115P
Ships in 7 Business Days
Auto Notify
ON SALE! SAVE 16%
$61.99

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

$52.01 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#281937 - 074121121B - Thermostat Housing - Located behind water pump housing - Genuine Volkswagen Audi - Audi Volkswagen

Located behind water pump housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281937
Mfg#:
074121121B
Ships in 3 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.

$55.99

This product was last offered at the strikethrough price on
06-25-2026

$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Pipe

ES#283514 - 078115278B - Oil Pipe - Fits onto the oil pump - Genuine Volkswagen Audi - Audi Volkswagen

Fits onto the oil pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283514
Mfg#:
078115278B
Ships in 3 Business Days
5% off MSRP

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

$54.99

This product was last offered at the strikethrough price on
06-25-2026

$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Power Steering Cap

ES#390578 - 4F0422376A - Power Steering Cap - Stop steering fluid from spilling out - Genuine Volkswagen Audi - Audi

Stop steering fluid from spilling out affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
390578
Mfg#:
4F0422376A
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.

$57.99

This product was last offered at the strikethrough price on
06-25-2026

$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core Pipe Set

ES#442058 - 8E1898350 - Heater Core Pipe Set - Connects the heater core to the coolant hoses - Genuine Volkswagen Audi - Audi

Connects the heater core to the coolant hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
442058
Mfg#:
8E1898350
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.

$57.99

This product was last offered at the strikethrough price on
06-25-2026

$51.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Hose

ES#450349 - 8K0145921F - Water Pump Hose - Connects the water pump to the hard water line - Genuine Volkswagen Audi - Audi

Connects the water pump to the hard water line affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450349
Mfg#:
8K0145921F
Special Order: No Guaranteed ETA
9% off MSRP

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

$56.99

This product was last offered at the strikethrough price on
06-25-2026

$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Valve

Runs in-line with the heater core return hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
OE Aftermarket - Corporate Logo
ES#:
4066884
Mfg#:
4A0819809
Back Ordered
$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cap

ES#2581214 - 078103485F - Oil Cap - Features built in pressure release valve to prevent gasket failure - Vemo - Audi Volkswagen

Features built in pressure release valve to prevent gasket failure affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2581214
Mfg#:
078103485F
In Stock
ON SALE!
$12.99

This product was last offered at the strikethrough price on
06-25-2026

$12.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Hose - Return

ES#2803278 - 06E121082C - Oil Cooler Hose - Return - Connects the oil cooler to the hard water tube - Rein - Audi

Connects the oil cooler to the hard water tube affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803278
Mfg#:
06E121082C
In Stock at Vendor
$12.99 USD
Free Shipping
on orders $49 and up

Thermostat Housing O-Ring

ES#4690986 - 06M121688 - Thermostat Housing O-Ring - Seal for the thermostat housing - Elring - Audi

Seal for the thermostat housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
4690986
Mfg#:
06M121688
Ships in 1-2 days
$12.99 USD
Free Shipping
on orders $49 and up

Coolant Pipe O-Ring - Priced Each

ES#2803463 - N90765301 - Coolant Pipe O-Ring - Priced Each - Provides seal from metal to plastic cooling line end fitting. 32X4 - Rein - Audi Volkswagen

Provides seal from metal to plastic cooling line end fitting. 32X4 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803463
Mfg#:
N90765301
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#3213277 - N10832501 - Hex Bolt - Priced Each - Hex bolt to secure pulley to water pump, four required. M6x10 - Genuine Volkswagen Audi - Audi

Hex bolt to secure pulley to water pump, four required. M6x10 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3213277
Mfg#:
N10832501
Ships in 3 Business Days
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bolt (6x18) - Priced Each

ES#472014 - N91140701 - Bolt (6x18) - Priced Each - Used on Main return pipe that connects to the heater core hoses and the engine - Genuine Volkswagen Audi - Audi

Used on Main return pipe that connects to the heater core hoses and the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
472014
Mfg#:
N91140701
Ships in 3 Business Days
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Gasket - Set

ES#3545395 - 034198025F - Valve Cover Gasket - Set - Stop slow oil leaks - Elring - Audi

Stop slow oil leaks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
3545395
Mfg#:
034198025F
In Stock at Vendor
$51.30 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Gasket - Priced Each

ES#4779265 - 06M103148L - Cylinder Head Gasket - Priced Each - Stop leaks and restore engine power, For Cylinders 1-3 - Genuine Volkswagen Audi - Audi

Stop leaks and restore engine power, For Cylinders 1-3 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4779265
Mfg#:
06M103148L
Ships in 3 Business Days
ON SALE! SAVE 40%
$42.99

This product was last offered at the strikethrough price on
02-26-2026

$25.64 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

FP34 Surge Tank Hardware Kit - -6AN Connections

ES#3419786 - 034-106-Z025 - FP34 Surge Tank Hardware Kit - -6AN Connections - Allows for -6AN connections for all inputs and outputs on the 034 FP34 Surge Tank - 034Motorsport - Audi Volkswagen

Allows for -6AN connections for all inputs and outputs on the 034 FP34 Surge Tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3419786
Mfg#:
034-106-Z025
Ships in 3 Business Days
$51.00 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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