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Audi S4 Engine Parts & Accessories

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Voltage Regulator

ES#280125 - 06B903803B - Voltage Regulator - Located on the rear of the alternator - Genuine Volkswagen Audi - Audi Volkswagen

Located on the rear of the alternator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with Valeo alternator only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280125
Mfg#:
06B903803B
Ships in 5 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.

$420.99

This product was last offered at the strikethrough price on
06-28-2026

$392.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Left & Right Timing Chain Kit

ES#2593410 - 079109229LKT - Left & Right Timing Chain Kit - This kit comes with the necessary timing chains and guides to get your timing job done, does not include hardware - Assembled By ECS - Audi

This kit comes with the necessary timing chains and guides to get your timing job done, does not include hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2593410
Mfg#:
079109229LKT
In Stock
ON SALE! SAVE 24%
$512.99

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

$392.37 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Purge Valve

ES#4818590 - 1C0906517A - Purge Valve - Common cure for DTC P0441 - Bremmen Parts - Audi Volkswagen Porsche

Common cure for DTC P0441 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818590
Mfg#:
1C0906517A
Ships on Aug 10, 2026
Auto Notify
ON SALE! SAVE 21%
$37.99

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

$30.18 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#2828407 - 079121014D - Water Pump - Does not include the full assembly - URO - Audi

Does not include the full assembly 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:
URO - Corporate Logo
ES#:
2828407
Mfg#:
079121014D
Ships in 1 Business Day
$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Phenolic Intake Manifold Spacer Kit - Small Port

ES#2864570 - 034-108-9003-SP - Phenolic Intake Manifold Spacer Kit - Small Port - Phenolic Intake Manifold Spacer, 5mm Thickness to Prevent Heat Conductivity to the Intake Manifold From the Cylinder Head. - 034Motorsport - Audi

Phenolic Intake Manifold Spacer, 5mm Thickness to Prevent Heat Conductivity to the Intake Manifold From the Cylinder Head. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Small Port - For 2.7T models using stock intake manifold

Brand:
034Motorsport - Corporate Logo
ES#:
2864570
Mfg#:
034-108-9003-SP
In Stock
ON SALE! SAVE 10%
$130.00

This product was last offered at the strikethrough price on
06-28-2026

$117.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain - Priced Each

ES#2812964 - 058109229B - Timing Chain - Priced Each - Connects the camshafts together around the tensioner - Hamburg Tech - Audi Volkswagen

Connects the camshafts together around the tensioner affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
One per bank

Brand:
Hamburg Tech - Corporate Logo
ES#:
2812964
Mfg#:
058109229B
In Stock
Limited Qty Sale
$29.99

This product was last offered at the strikethrough price on
05-26-2026

$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator

Fix leaks and keep your cooling system efficient affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mahle-Behr - Corporate Logo
ES#:
4839713
Mfg#:
8W0121251H
In Stock at Vendor
$388.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Leak Detection Pump

ES#452225 - 8K0906271 - Leak Detection Pump - Tests the fueling system for leaks - Genuine Volkswagen Audi - Audi

Tests the fueling system for leaks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to production date 3/5/2012

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
452225
Mfg#:
8K0906271
Ships in 2 Business Days
8% off MSRP

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

$425.00

This product was last offered at the strikethrough price on
03-09-2026

$388.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Gasket Set - Priced Each

ES#252152 - 078198025 - Valve Cover Gasket Set - Priced Each - One side per set. Fits left and right side - Victor Reinz - Audi Volkswagen

One side per set. Fits left and right side affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
252152
Mfg#:
078198025
In Stock at Vendor
$32.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Intake Scoop & Overlay Kit

ES#3476954 - 024641ecs01KT - Carbon Fiber Intake Scoop & Overlay Kit - Full solution to give your factory intake system a performance look! - ECS - Audi

Full solution to give your factory intake system a performance look! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3476954
Mfg#:
024641ECS01KT
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$427.99

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

$385.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Catch Can Breather Kit

ES#3447989 - 034-101-1001 - Catch Can Breather Kit - The ultimate breather can kit for the C4 AAN S4/S6, everything needed for a clean, OEM-type conversion - 034Motorsport - Audi

The ultimate breather can kit for the C4 AAN S4/S6, everything needed for a clean, OEM-type conversion affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3447989
Mfg#:
034-101-1001
Ships in 2 Business Days
ON SALE! SAVE 10%
$385.00

This product was last offered at the strikethrough price on
06-28-2026

$346.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Position Sensor

ES#4173505 - 059906433C - Crankshaft Position Sensor - Also known as the RPM or speed sensor - Bremi - Audi

Also known as the RPM or speed sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to the 2012 model year

Brand:
Bremi - Corporate Logo
ES#:
4173505
Mfg#:
059906433C
Ships in 1 Business Day
$49.99

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

$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Gasket

ES#4039378 - 078103547F - Crankcase Breather Gasket - Seals the crankcase breather to the engine block - Elring - Audi

Seals the crankcase breather to the engine block 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#:
4039378
Mfg#:
078103547F
Ships in 3 Business Days
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi 3.0T Performance Overdrive Crank Pulley With Belt - 187.3mm - For Use With Supercharger Pulley Upgrade

ES#4056962 - 025510ecs01KT - Audi 3.0T Performance Overdrive Crank Pulley With Belt - 187.3mm - For Use With Supercharger Pulley Upgrade - Spin the supercharger faster without affecting the accessory drive system - ECS - Audi Volkswagen Porsche

Spin the supercharger faster without affecting the accessory drive system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Appropriate stage 2 software is required for use

Brand:
ECS - Corporate Logo
ES#:
4056962
Mfg#:
025510ECS01KT
In Stock at Vendor
$391.98

This product was last offered at the strikethrough price on
06-10-2026

$383.87 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cam Chain Tensioner Gasket - Left

ES#4727718 - 079131120A - Cam Chain Tensioner Gasket - Left - Keep your engine sealed - Elring - Audi

Keep your engine sealed 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#:
4727718
Mfg#:
079131120A
In Stock
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose - Upper

ES#252441 - 8E0121070B - Radiator Hose - Upper - Includes quick disconnect piece - Feed Hose - Genuine Volkswagen Audi - Audi

Includes quick disconnect piece - Feed Hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
252441
Mfg#:
8E0121070B
Ships in 4 Business Days
8% off MSRP

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

$416.99

This product was last offered at the strikethrough price on
06-28-2026

$381.99 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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Manufacturer names and/or part numbers are used only for identification purposes.

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