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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Most Popular Parts

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Front Brake Pad Wear Sensor

ES#4040511 - 8W0615121H - Front Brake Pad Wear Sensor - Alerts you when your brake pads begin to wear thin - URO - Audi

Alerts you when your brake pads begin to wear thin 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#:
4040511
Mfg#:
8W0615121H
In Stock
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Service Kit

ES#4620705 - G055190A2-1KT - Rear Differential Service Kit - Complete kit with Genuine fluids and magnetic drain plugs to service your rear differential. - Assembled By ECS - Audi

Complete kit with Genuine fluids and magnetic drain plugs to service your rear differential. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
for vehicles without sport diff

Brand:
Assembled By ECS - Corporate Logo
ES#:
4620705
Mfg#:
G055190A2-1KT
In Stock
$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

19" Style 084 Wheels - Set Of Four

ES#2823122 - 084-2kt - 19" Style 084 Wheels - Set Of Four - 19x9.5 ET40 5x112 66.6CB - Silver - Alzor - Audi

19x9.5 ET40 5x112 66.6CB - Silver affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Front wheels require an 10mm spacer to clear the brake calipers

Brand:
Alzor - Corporate Logo
ES#:
2823122
Mfg#:
084-2KT
In Stock
ON SALE! SAVE 25%
$1300.00

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

$975.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Style 620 - Set Of Four

ES#3690744 - 620-18KT1 - 19" Style 620 - Set Of Four - 19"x8.5" ET42 5x112 - Hyper Silver - Alzor - Audi MINI

19"x8.5" ET42 5x112 - Hyper Silver affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Front wheels require an 10mm spacer to clear the brake calipers

Brand:
Alzor - Corporate Logo
ES#:
3690744
Mfg#:
620-18KT1
In Stock
ON SALE! SAVE 25%
$1300.00

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

$975.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Style 084 Wheels - Set Of Four

ES#2823124 - 084-3kt - 19" Style 084 Wheels - Set Of Four - 19"x8.5" ET35 66.6CB 5x112 Gunmetal - Alzor - Audi MINI

19"x8.5" ET35 66.6CB 5x112 Gunmetal affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Front wheels require a 10mm spacer to clear the brake calipers

Brand:
Alzor - Corporate Logo
ES#:
2823124
Mfg#:
084-3KT
Ships on Dec 7, 2026
Auto Notify
ON SALE! SAVE 25%
$1300.00

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

$975.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE Lowering Springs

ES#5457158 - IESSCK2 - IE Lowering Springs - Performance without the punishment: get a connected, aggressive stance while maintaining the ride comfort of your factory dampers. - Integrated Engineering - Audi

Performance without the punishment: get a connected, aggressive stance while maintaining the ride comfort of your factory dampers. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
5457158
Mfg#:
IESSCK2
In Stock
$324.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Brake Caliper (Red) - Left

ES#3680395 - 8W0615403LQC8 - Rear Brake Caliper (Red) - Left - Includes the parking brake motor - Genuine Volkswagen Audi - Audi

Includes the parking brake motor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3680395
Mfg#:
8W0615403LQC8
Ships in 9 Business Days
5% off MSRP

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

$1013.99

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

$962.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTS Transmission Mount Insert

ES#3410473 - CTS-HW-0249 - CTS Transmission Mount Insert - Eliminate excess drivetrain slop and movement without additional NVH - CTS - Audi

Eliminate excess drivetrain slop and movement without additional NVH affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
3410473
Mfg#:
CTS-HW-0249
Back Ordered
$59.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Upgraded Ignition Coils - Blue - Set Of Six

ES#4164385 - MS100204-6KT - APR Upgraded Ignition Coils - Blue - Set Of Six - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - APR - Audi

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
CARB certified for sale in all 50 states

Brand:
APR - Corporate Logo
ES#:
4164385
Mfg#:
MS100204-6KT
EO#:
D-783-5
In Stock
$317.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbocharger Oil Return Line

ES#3211791 - 06M145736F - Turbocharger Oil Return Line - Directs oil away from the turbo and back into engine. - Genuine Volkswagen Audi - Audi

Directs oil away from the turbo and back into engine. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3211791
Mfg#:
06M145736F
Ships in 3 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.

$113.99

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

$105.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

18" 5 Spoke Wheel - Priced Each

ES#4148666 - 80A601025BE - 18" 5 Spoke Wheel - Priced Each - 18"x8" ET 39, does not include center cap - Genuine Volkswagen Audi - Audi

18"x8" ET 39, does not include center cap affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4148666
Mfg#:
80A601025BE
Ships in 5 Business Days
4% off MSRP

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

$992.99

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

$950.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Side Blade Set

ES#3195012 - 019189ecs01KT - Carbon Fiber Side Blade Set - Add a touch of style made with real carbon fiber to your Audi - ECS - Audi

Add a touch of style made with real carbon fiber to your Audi affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3195012
Mfg#:
019189ECS01KT
Ships on Dec 7, 2026
ON SALE! SAVE 10%
$1050.99

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

$945.89 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

X34 Carbon Fiber Air Scoop - Large Intercooler Size

ES#4845335 - 034-108-Z134 - X34 Carbon Fiber Air Scoop - Large Intercooler Size - Increase airflow for your 2.0T or 3.0T equipped B9 A4/S4/Allroad with the 034Motorsport X34 Carbon Fiber Intake Air Scoop! - 034Motorsport - Audi

Increase airflow for your 2.0T or 3.0T equipped B9 A4/S4/Allroad with the 034Motorsport X34 Carbon Fiber Intake Air Scoop! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Will not fit vehicles with the active grille shutter system, such as B9.5 A4 and allroad.

Brand:
034Motorsport - Corporate Logo
ES#:
4845335
Mfg#:
034-108-Z134
Ships in 2 Business Days
ON SALE! SAVE 10%
$174.00

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

$156.60 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Self Locking Bolt - Priced Each

ES#471695 - N91041702 - Self Locking Bolt - Priced Each - Install new hardware with your new parts. M12x1.5x38 - Genuine Volkswagen Audi - Audi Porsche

Install new hardware with your new parts. M12x1.5x38 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the rear caliper carrier to the spindle - upper & lower position

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471695
Mfg#:
N91041702
In Stock
$13.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Competition Intercooler Kit

The high performance intercooler core provides a 134% larger frontal area and 105% more volume compared to the stock mounted intercooler. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
**This kit is for European vehicle fitment**

Brand:
Wagner Tuning - Corporate Logo
ES#:
4489118
Mfg#:
200001120.KITSIN
Ships in 1 Business Day
ON SALE! SAVE 10%
$1040.00

This product was last offered at the strikethrough price on
07-06-2026

$936.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Racingline High-Flow Air Filter

ES#3570408 - VWR1141S4 - Racingline High-Flow Air Filter - Set your 3.0 TFSI turbocharged engine free by allowing it to breathe better and operate more efficiently! - Racingline - Audi

Set your 3.0 TFSI turbocharged engine free by allowing it to breathe better and operate more efficiently! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Racingline - Corporate Logo
ES#:
3570408
Mfg#:
VWR1141S4
Ships in 2 Business Days
ON SALE! SAVE 10%
$171.99

This product was last offered at the strikethrough price on
07-01-2026

$154.70 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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