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Audi S4 Engine Parts & Accessories

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ES#259915 - 078903016H - Alternator - 120 Amps - Brand new, no core charge - Valeo - Audi

Brand new, no core charge affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For cars that came with Valeo alternators. Please check existing alternator part number before ordering

Brand:
Valeo - Corporate Logo
ES#:
259915
Mfg#:
078903016H
Ships on Jul 22, 2026
$400.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4465107 - 4.2-5V - Unitronic Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next

Brand:
Unitronic - Corporate Logo
ES#:
4465107
Mfg#:
4.2-5V
In Stock
ON SALE!
Starting at $400.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4464667 - 2.7T-5VT - Unitronic Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next

Brand:
Unitronic - Corporate Logo
ES#:
4464667
Mfg#:
2.7T-5VT
In Stock
ON SALE!
Starting at $400.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4045912 - 27tRS6TH - RS6 / RS6-R Turbo Hardware Kit For 2.7T - The necessary hardware to install OEM Borg Warner RS6 turbochargers, RS6 style turbochargers, or JHM RS6-R turbocharges on your 2.7t engine - JH Motorsports  - Audi

The necessary hardware to install OEM Borg Warner RS6 turbochargers, RS6 style turbochargers, or JHM RS6-R turbocharges on your 2.7t engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JH Motorsports  - Corporate Logo
ES#:
4045912
Mfg#:
27TRS6TH
Ships in 5 Business Days
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#441537 - 8E0973722 - Electrical Connector Housing - 2 Pin - Priced Each - Does not come with terminals or wires - Genuine Volkswagen Audi - Audi

Does not come with terminals or wires affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
441537
Mfg#:
8E0973722
Ships in 1 day
7% off MSRP

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

$42.99

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

$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4845679 - 108862 - 8100 ECO-Clean Engine Oil (0w-20) - 5 Liters - 100% synthetic engine oil specially designed around the demands of direct injection engines. Approvals: BMW LL-17 FE+, MBZ 229.71. ACEA C5, API SN Plus + RC, ILSAC GF-5 - Motul - Audi Volkswagen

100% synthetic engine oil specially designed around the demands of direct injection engines. Approvals: BMW LL-17 FE+, MBZ 229.71. ACEA C5, API SN Plus + RC, ILSAC GF-5 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motul - Corporate Logo
ES#:
4845679
Mfg#:
108862
In Stock at Vendor
9% off MSRP

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

$88.20

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

$79.94 USD
Free Shipping
on orders $49 and up
ES#471191 - N90925001 - Coolant Pipe O-Ring - Priced Each - Provides seal from metal to plastic cooling line end fitting. 17x3 - Genuine Volkswagen Audi - Audi

Provides seal from metal to plastic cooling line end fitting. 17x3 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471191
Mfg#:
N90925001
In Stock
17% off MSRP

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

$5.99

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

$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3419739 - 034-108-6006 - Billet MAF Housing - Bosch Style (Early) 85mm ID - Perfect for use in upgraded turbo cars with larger injectors and appropriate software - 034Motorsport - Audi

Perfect for use in upgraded turbo cars with larger injectors and appropriate software affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits models with Bosch style MAF sensor - Up to the 2000 model year

Brand:
034Motorsport - Corporate Logo
ES#:
3419739
Mfg#:
034-108-6006
Ships in 2 Business Days
ON SALE! SAVE 10%
$133.00

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

$119.70 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4429102 - 06M121481AE - Coolant Hose - Outlet for the water pump - Genuine Volkswagen Audi - Audi

Outlet for the water pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4429102
Mfg#:
06M121481AE
Ships in 1 day
6% off MSRP

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

$141.99

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

$132.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2631446 - 034129101B - Pressure Control Valve (PCV) - Located on the turbo inlet pipe. 19mm - Vaico - Audi Volkswagen

Located on the turbo inlet pipe. 19mm affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2631446
Mfg#:
034129101B
In Stock
ON SALE!
$34.99

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

$33.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3551 - 079133843A - Engine Air Filter - Keep your engine breathing fresh air - Hengst - Audi
ECS Tuning recommends this product.

Keep your engine breathing fresh air affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! Hengst is our preferred OEM filtration supplier!

Brand:
Hengst - Corporate Logo
ES#:
3551
Mfg#:
079133843A
Ships in 10 Business Days
ON SALE!
$19.99

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

$18.99 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4214749
Mfg#:
06E103148BB
Ships in 1 day
8% 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
06-28-2026

$131.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3438274 - 06E131101K - EGR Valve - Left - Also known as the 'combi valve' - Pierburg - Audi

Also known as the 'combi valve' affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pierburg - Corporate Logo
ES#:
3438274
Mfg#:
06E131101K
Ships in 1-3 days
$99.99

This product was last offered at the strikethrough price on
02-10-2026

$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2580761 - 7402KT - Spark Plugs - Set Of Six - Keep your engine running strong - Bosch - Audi

Keep your engine running strong 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:
Bosch - Corporate Logo
ES#:
2580761
Mfg#:
7402KT
In Stock
$65.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3132779 - 06E121119K - Round Seal - Priced Each - Install a new o-ring for a proper seal. 31.9x3.3x5.3 - Genuine Volkswagen Audi - Audi

Install a new o-ring for a proper seal. 31.9x3.3x5.3 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3132779
Mfg#:
06E121119K
In Stock
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#277744 - 059010158A - Timing Belt Service Sticker - 75,000 Mile Interval - Keep track of your timing belt service - Genuine Volkswagen Audi - Audi Volkswagen

Keep track of your timing belt service affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
277744
Mfg#:
059010158A
In Stock
$6.58 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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