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Audi S4 Engine Parts & Accessories

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ES#4690591 - RF100026 - APR High Flow Intake Filter - Flow-bench optimized to provide maximum performance with your factory intake system! - APR - Audi

Flow-bench optimized to provide maximum performance with your factory intake system! Call In Or Chat For Best Price!

Brand:
APR - Corporate Logo
ES#:
4690591
Mfg#:
RF100026
In Stock
12% off MSRP

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

$66.99

This product was last offered at the strikethrough price on
09-28-2026

$58.99 USD
Free Shipping
ES#2643208 - 078911023D -  Starter - New - New unit - No core charge required - Bosch - Audi Volkswagen

New unit - No core charge required We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2643208
Mfg#:
078911023D
Back Ordered
$727.99

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

$706.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3642149 - 8W0201801N - EVAPCANIST - Genuine Volkswagen Audi - Audi

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3642149
Mfg#:
8W0201801N
Ships in 8 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.

$783.99

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

$706.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2984918 - 10-10121 - Pro 5 R Drop In Filter - When maximum airflow is critical, featuring 5 layers of cotton gauze filtration material - AFE - Audi

When maximum airflow is critical, featuring 5 layers of cotton gauze filtration material

Brand:
AFE - Corporate Logo
ES#:
2984918
Mfg#:
10-10121
In Stock
20% off MSRP

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

$110.00

This product was last offered at the strikethrough price on
05-13-2026

$88.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4883733 - 077103245B - Pressure Control Valve (PCV) - Also called the "breather valve" or "oil separator" - Rein - Audi Volkswagen

Also called the "breather valve" or "oil separator" 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4883733
Mfg#:
077103245B
In Stock
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4004617 - 8K0121101J - Upper Radiator Hose - Connects the upper radiator port to the hard water tube - Rein - Audi

Connects the upper radiator port to the hard water tube 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4004617
Mfg#:
8K0121101J
Ships in 1 Business Day
$86.99

This product was last offered at the strikethrough price on
10-22-2026

$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Comes with everything you need to replace your incredibly heavy, OEM battery with a lightweight battery and relocate it to the trunk of your B6-B7 S4 or A4!

Brand:
JH Motorsports  - Corporate Logo
ES#:
4045942
Mfg#:
B67BATTRELO
Ships in 10 Business Days
$699.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2702651 - 8E0863821ALKT1 - Belly Pan & Installation Hardware Kit - Includes a replacement belly pan with all necessary mounting hardware - Genuine Volkswagen Audi - Audi

Includes a replacement belly pan with all necessary mounting hardware

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2702651
Mfg#:
8E0863821ALKT1
Ships in 4 Business Days
$699.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#3642054 - 8K0121405S - Coolant Expansion Tank - Includes the heat shield - Genuine Volkswagen Audi - Audi

Includes the heat shield

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3642054
Mfg#:
8K0121405S
Ships in 2 Business Days
13% off MSRP

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

$201.99

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

$174.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2813017 - 06A145710N - 710N Diverter Valve - Priced Each - A great upgrade for stock to mildly tuned engines - Hamburg Tech - Audi Volkswagen

A great upgrade for stock to mildly tuned engines We Price Match - Give Us A Call or Chat!
2 required

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813017
Mfg#:
06A145710N
In Stock
$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3514900 - eurodyne30tKT - Eurodyne Reflash - With Powertap Air Flash Tool - Tune your car with just your laptop and choose gains ranging from 97-108 hp and 45-56 ft-lb of torque - Eurodyne - Audi

Tune your car with just your laptop and choose gains ranging from 97-108 hp and 45-56 ft-lb of torque Both B8 and B8.5 models are supported.

Brand:
Eurodyne - Corporate Logo
ES#:
3514900
Mfg#:
EURODYNE30TKT
In Stock
$699.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4140445 - 06E903016S - New Alternator - 150 Amp - Keep your charging system operating at full potential - Valeo - Audi

Keep your charging system operating at full potential We Price Match - Give Us A Call or Chat!
Up to the 2012 model year

Brand:
Valeo - Corporate Logo
ES#:
4140445
Mfg#:
06E903016S
Ships in 1 Business Day
$701.99

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

$694.93 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2812910 - 034109309AD - Cam Follower/Hydraulic Lifter - Priced Each - Constant contact with the camshaft wears these down - Hamburg Tech - Audi Volkswagen

Constant contact with the camshaft wears these down We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2812910
Mfg#:
034109309AD
In Stock
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4858181 - 034-106-7016-S4 - Fuel Rail Pair With Brackets - CNC machined billet aluminum fuel rails for the 2.7T - 034Motorsport - Audi

CNC machined billet aluminum fuel rails for the 2.7T 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4858181
Mfg#:
034-106-7016-S4
Ships in 2 Business Days
$230.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3419777 - 034-106-A003 - FP34 Fuel Pump Surge Tank - With Pump  - Fully enclosed FP34 fuel pump surge tank with Bosch 044 "Motorsport" fuel pump - 034Motorsport - Audi Volkswagen

Fully enclosed FP34 fuel pump surge tank with Bosch 044 "Motorsport" fuel pump 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3419777
Mfg#:
034-106-A003
Back Ordered
$690.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5396700 - 5WA201550BD - Gas Cap With Strap - Replace your leaking cap, or the one you left at the pump - Hamburg Tech - Audi

Replace your leaking cap, or the one you left at the pump Fits vehicle with production dates from 06/21/2021

Brand:
Hamburg Tech - Corporate Logo
ES#:
5396700
Mfg#:
5WA201550BD
In Stock
$45.99 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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