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Audi S4 Most Popular Parts

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Coolant Hose

ES#4818503 - 078121096AD - Coolant Hose - Connects coolant pipe to oil cooler housing - Bremmen Parts - Audi Volkswagen

Connects coolant pipe to oil cooler housing 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818503
Mfg#:
078121096AD
In Stock
$19.99 USD
Free Shipping
on orders $49 and up

Rear Differential Service Kit - With ECS Magnetic Drain/Fill Plug

ES#3677577 - g052145s2kt4KT - Rear Differential Service Kit - With ECS Magnetic Drain/Fill Plug - Complete kit with Genuine Audi 75w90 fluid to service your rear differential - Assembled By ECS - Audi

Complete kit with Genuine Audi 75w90 fluid to service your rear differential 10X Entries Into Our F80 M3 Sweepstakes USE CODE KIT15 IN CART FOR BEST PRICE

Brand:
Assembled By ECS - Corporate Logo
ES#:
3677577
Mfg#:
G052145S2KT4KT
In Stock
$157.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Upper Control Arm - Left

ES#1834197 - 8K0505323H - Rear Upper Control Arm - Left - Keep your suspension in top shape - Genuine Volkswagen Audi - Audi

Keep your suspension in top shape

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1834197
Mfg#:
8K0505323H
Ships in 1-2 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.

$469.99

This product was last offered at the strikethrough price on
10-26-2026

$423.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Upper Control Arm - Right

ES#1834198 - 8K0505324H - Rear Upper Control Arm - Right - Keep your suspension in top shape - Genuine Volkswagen Audi - Audi

Keep your suspension in top shape

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1834198
Mfg#:
8K0505324H
Ships in 1-2 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.

$469.99

This product was last offered at the strikethrough price on
10-26-2026

$423.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Press-on - 187mm)

ES#4017694 - CTS-HW-434 - CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Press-on - 187mm) - Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output - CTS - Audi Porsche

Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output *NOTE: This kit must be used with appropriate "Stage 2" performance software.

Brand:
CTS - Corporate Logo
ES#:
4017694
Mfg#:
CTS-HW-434
Ships in 7 Business Days
ON SALE! SAVE 20%
$529.99

This product was last offered at the strikethrough price on
09-29-2026

$423.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Bolt-On - 180mm)

ES#4017699 - CTS-HW-435 - CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Bolt-On - 180mm) - Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output - CTS - Audi Porsche

Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output *NOTE: This kit must be used with appropriate "Stage 2" performance software.

Brand:
CTS - Corporate Logo
ES#:
4017699
Mfg#:
CTS-HW-435
Special Order: No Guaranteed ETA
ON SALE! SAVE 20%
$529.99

This product was last offered at the strikethrough price on
09-29-2026

$423.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Press-on - 180mm)

ES#4017693 - CTS-HW-433 - CTS Turbo 3.0T V6 Dual Pulley Upgrade Kit (Press-on - 180mm) - Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output - CTS - Audi Porsche

Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output *NOTE: This kit must be used with appropriate "Stage 2" performance software.

Brand:
CTS - Corporate Logo
ES#:
4017693
Mfg#:
CTS-HW-433
Special Order: No Guaranteed ETA
ON SALE! SAVE 20%
$529.99

This product was last offered at the strikethrough price on
09-29-2026

$423.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Hose - Outlet

ES#280915 - 06E133817J - Secondary Air Injection Hose - Outlet - Connects the secondary air pump to the EGR connecting pipe - Genuine Volkswagen Audi - Audi

Connects the secondary air pump to the EGR connecting pipe Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280915
Mfg#:
06E133817J
Ships in 9 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.

$121.99

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

$105.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Headlight Level Sensor - Priced Each

ES#4669275 - 4B0907503A - Headlight Level Sensor - Priced Each - Fits the front and rear position - URO - Audi Volkswagen

Fits the front and rear position 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4669275
Mfg#:
4B0907503A
In Stock
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

MAP Sensor Adapter Flange

ES#3137484 - 034-145-F015 - MAP Sensor Adapter Flange - MAP Sensor adapter flange for VW/Audi MAP sensors - Perfect for use when building your own intercooler plumbing - 034Motorsport - Audi Volkswagen

MAP Sensor adapter flange for VW/Audi MAP sensors - Perfect for use when building your own intercooler plumbing 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3137484
Mfg#:
034-145-F015
In Stock
$42.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rubber Mount Package for AWE Drivetrain Stabilizer (DTS) - Rubber Mounts Only

ES#4043301 - 2210-11016 - Rubber Mount Package for AWE Drivetrain Stabilizer (DTS) - Rubber Mounts Only - Includes the mount and all needed hardware to replace the old mount. - AWE - Audi Volkswagen

Includes the mount and all needed hardware to replace the old mount. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
AWE - Corporate Logo
ES#:
4043301
Mfg#:
2210-11016
Ships on Nov 30, 2026
5% off MSRP

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

$110.99

This product was last offered at the strikethrough price on
11-06-2026

$105.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

HPA Wheel Spacer & Bolt Kit - 15mm

ES#5434344 - HVW-832 - HPA Wheel Spacer & Bolt Kit - 15mm - Push your wheels out for a bold stance with HPAs 15mm Wheel Spacer & Bolt Kit - precision CNC machined hubcentric spacers and extended hardware for a secure, vibration free fit. - HPA Motorsports - Audi BMW Porsche

Push your wheels out for a bold stance with HPA’s 15mm Wheel Spacer & Bolt Kit - precision CNC machined hubcentric spacers and extended hardware for a secure, vibration free fit.

Brand:
HPA Motorsports - Corporate Logo
ES#:
5434344
Mfg#:
HVW-832
Back Ordered
Starting at $140.00 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BFI Heavy Weight Shift Knob - Rosso Centaurus Leather

ES#3478465 - GS2DGRC - BFI Heavy Weight Shift Knob - Rosso Centaurus Leather - Just because your car doesn't have a third pedal, doesn't mean you should be stuck with some goofy shifter. - Black Forest Industries - Audi Volkswagen

Just because your car doesn't have a third pedal, doesn't mean you should be stuck with some goofy shifter.

Brand:
Black Forest Industries - Corporate Logo
ES#:
3478465
Mfg#:
GS2DGRC
In Stock
$209.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BFI Manual Alcantara Shift Boot - Red Stitching

ES#3412405 - 5234-8K-202 - BFI Manual Alcantara Shift Boot - Red Stitching - Compliment your BFI shift knob with a custom shift boot made from the finest materials available - Black Forest Industries - Audi

Compliment your BFI shift knob with a custom shift boot made from the finest materials available Requires a 1-2 week build time if not in stock

Brand:
Black Forest Industries - Corporate Logo
ES#:
3412405
Mfg#:
5234-8K-202
Ships on Dec 18, 2026
$104.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BFI Manual Alcantara Shift Boot - Black Stitching

ES#3412404 - 5234-8K-201 - BFI Manual Alcantara Shift Boot - Black Stitching - Compliment your BFI shift knob with a custom shift boot made from the finest materials available - Black Forest Industries - Audi

Compliment your BFI shift knob with a custom shift boot made from the finest materials available Requires a 1-2 week build time if not in stock

Brand:
Black Forest Industries - Corporate Logo
ES#:
3412404
Mfg#:
5234-8K-201
Ships in 8 Business Days
$104.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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