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Audi S4 Engine Parts & Accessories

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ES#4715348 - 01-839-02150-9 - Audi / Porsche 2.9L 3.0L EA839 Water-Methanol Injection System Kit  - Complete Bolt-On System, Compatible with stock & modified applications, and all hardware & gaskets included! - Weistec - Audi Porsche

Complete Bolt-On System, Compatible with stock & modified applications, and all hardware & gaskets included! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Weistec - Corporate Logo
ES#:
4715348
Mfg#:
01-839-02150-9
Ships in 1 Business Day
$1799.00 USD
Free Shipping
ES#4715588 - 01-839-02087-8 - Weistec Audi / Porsche VAG EA839 3.0T W.3 Turbo Upgrade - 100% Bolt-on installation / Upgrade. You are required to ship Weistec your OE turbochargers as a core. - Weistec - Audi Porsche

100% Bolt-on installation / Upgrade. You are required to ship Weistec your OE turbochargers as a core. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
You are required to ship Weistec your OE turbochargers as a core.

Brand:
Weistec - Corporate Logo
ES#:
4715588
Mfg#:
01-839-02087-8
Ships in 1 Business Day
$2199.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Rate valve spring set affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3086184
Mfg#:
034-201-8000
Ships in 2 Business Days
$304.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Precision-manufactured to strict OEM dimensional specifications with advanced materials. High heat resistance to ensure long-term durability in extreme environments. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
5457188
Mfg#:
034-145-Z061
Ships in 2 Business Days
$28.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SuperDuper Charger Throttle Body Adapter included in the SuperDuper S34 Insuction Bundle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This kit includes the Cast throttle body adapter ONLY, Purchase this kit if you already have an 84MM VDO Throttle body & S34 Intake System

Brand:
034Motorsport - Corporate Logo
ES#:
4858206
Mfg#:
034-108-1901
Ships in 2 Business Days
$380.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport Cat-Pipe with 200 CPSI Catalytic Converter - Increase power, reduce weight, and improve sound! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Armytrix - Corporate Logo
ES#:
4164584
Mfg#:
AU94S-CD
Ships on Jul 13, 2026
$2618.00 USD
Free Shipping

Also referred to as the impulse sender 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#:
4818216
Mfg#:
06M907601DKT
In Stock at Vendor
ON SALE! SAVE 10%
$112.99

This product was last offered at the strikethrough price on
04-11-2026

$102.06 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ensure a proper seal and good looks with this new cap affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Blau - Corporate Logo
ES#:
3447612
Mfg#:
06C103485N
In Stock at Vendor
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Don't let your car sit dead! 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#:
4812519
Mfg#:
06M911021
In Stock at Vendor
$553.99

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

$537.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hardware and gaskets used for K03 turbocharger mounting. One kit required per turbo. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
D&W Diesel - Corporate Logo
ES#:
4709374
Mfg#:
172-784-0293
Ships in 1 Business Day
$52.99 USD
Free Shipping
on orders $49 and up

Keep your drive belt tight affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Dayco - Corporate Logo
ES#:
4147569
Mfg#:
078903133AB
In Stock at Vendor
$89.99

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

$86.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Manifold absolute pressure sensor, lets your ECU know how much air pressure is in your intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Located on the rear of the supercharger

Brand:
Delphi - Corporate Logo
ES#:
4135574
Mfg#:
03C906051F
In Stock at Vendor
$111.99

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

$108.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Includes the spark plug boot affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Delphi - Corporate Logo
ES#:
4142130
Mfg#:
058905105
In Stock at Vendor
$50.99

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

$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Seal up your intake manifold. Fits both left or right side 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#:
4818175
Mfg#:
06M133198B
In Stock at Vendor
$11.90 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Detects engine ping for timing adjustment, 465mm length with green connector affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For cylinders 1-3

Brand:
Facet - Corporate Logo
ES#:
5447075
Mfg#:
06E905377J
In Stock at Vendor
$51.99

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

$49.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Prevents excess pressure from building within the system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Four Seasons - Corporate Logo
ES#:
4142139
Mfg#:
8D0959482B
In Stock at Vendor
$175.99

This product was last offered at the strikethrough price on
01-17-2026

$165.99 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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