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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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Turbo Systems B9 S4/S5 3.0T Stage 2 Hybrid Turbocharger (650+ HP)

The Turbo Systems hybrid turbocharger is an original turbocharger that has been reworked to suit larger compressor and turbine wheels, along with a ball bearing cartridge.

Brand:
Emmanuele Design - Corporate Logo
ES#:
4415834
Mfg#:
TSH55TFSI-STG2
Ships in 2 Business Days
$3499.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

APR Strut Tower Brace (B9 Chassis)

ES#4899232 - SUS00027 - APR Strut Tower Brace (B9 Chassis) - Direct bolt-on strut brace engineered to enhance chassis rigidity, reduce flex, and improve handling for a more connected driving experience. - APR - Audi

Direct bolt-on strut brace engineered to enhance chassis rigidity, reduce flex, and improve handling for a more connected driving experience. Call In Or Chat For Best Price!

Brand:
APR - Corporate Logo
ES#:
4899232
Mfg#:
SUS00027
Ships on Oct 28, 2026
ON SALE! SAVE 10%
$349.99

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

$314.95 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

20" RSf72 - Set Of Four

ES#4348761 - 88.72.24brKT - 20" RSf72 - Set Of Four - 20"x9.0" ET35 5x112 - Gloss Bronze - Neuspeed - Audi

20"x9.0" ET35 5x112 - Gloss Bronze

Brand:
Neuspeed - Corporate Logo
ES#:
4348761
Mfg#:
88.72.24BRKT
Ships in 3 Business Days
$3457.99 USD
This product is lifetime replacement eligible Lifetime Replacement

20" RSf72 - Set Of Four

ES#4348765 - 88.72.25bKT - 20" RSf72 - Set Of Four - 20"X9.5" ET25 5x112 - Gloss Black - Neuspeed - Audi

20"X9.5" ET25 5x112 - Gloss Black

Brand:
Neuspeed - Corporate Logo
ES#:
4348765
Mfg#:
88.72.25BKT
Ships in 3 Business Days
$3457.99 USD
This product is lifetime replacement eligible Lifetime Replacement

20" RSf72 - Set Of Four

ES#4348763 - 88.72.25gKT - 20" RSf72 - Set Of Four - 20"x9.5" ET25 5x112 - Gloss Gun Metallic - Neuspeed - Audi

20"x9.5" ET25 5x112 - Gloss Gun Metallic

Brand:
Neuspeed - Corporate Logo
ES#:
4348763
Mfg#:
88.72.25GKT
Ships in 3 Business Days
$3457.99 USD
This product is lifetime replacement eligible Lifetime Replacement

20" Alloy Wheel - Priced Each

ES#4149406 - 8W0601025FT - 20" Alloy Wheel - Priced Each - 20"x9" ET22 5x112 - Does not include Center Cap - Genuine Volkswagen Audi - Audi

20"x9" ET22 5x112 - Does not include Center Cap

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4149406
Mfg#:
8W0601025FT
Ships in 9 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.

$1791.99

This product was last offered at the strikethrough price on
10-09-2026

$1724.99 USD
This product is lifetime replacement eligible Lifetime Replacement

20" Split 7-Spoke Wheel - Priced Each

ES#2600678 - 8T0601025CM - 20" Split 7-Spoke Wheel - Priced Each - 20"x9" ET29 5x112 - Silver - Genuine Volkswagen Audi - Audi

20"x9" ET29 5x112 - Silver

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2600678
Mfg#:
8T0601025CM
Ships on Oct 28, 2026
4% off MSRP

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

$1788.99

This product was last offered at the strikethrough price on
10-09-2026

$1722.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Performance Intake System

ES#4835388 - B930TINT - Performance Intake System - maximize your airflow with more power, torque, and incredible induction sounds! - ARM Motorsports - Audi

maximize your airflow with more power, torque, and incredible induction sounds!

Brand:
ARM Motorsports - Corporate Logo
ES#:
4835388
Mfg#:
B930TINT
Ships in 3 Business Days
$227.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" BBS CI-R Wheels - Set Of Four

ES#4753540 - CI2103PSPOKT1 - 19" BBS CI-R Wheels - Set Of Four - 19x8.5 ET45 5x112 66.6CB - Platinum Silver with Polished Rim Protector - BBS - Audi BMW Mercedes Benz MINI

19x8.5 ET45 5x112 66.6CB - Platinum Silver with Polished Rim Protector

Brand:
BBS - Corporate Logo
ES#:
4753540
Mfg#:
CI2103PSPOKT1
Ships on Oct 28, 2026
$3393.00 USD
This product is lifetime replacement eligible Lifetime Replacement

19" BBS CH-R Wheels - Set Of Four

ES#3138075 - CH122TIPOKT1 - 19" BBS CH-R Wheels - Set Of Four - 19x8.5 ET40 5x112 66.6CB - Satin Titanium with Polished Rim Protector - BBS - Audi BMW Mercedes Benz MINI

19x8.5 ET40 5x112 66.6CB - Satin Titanium with Polished Rim Protector

Brand:
BBS - Corporate Logo
ES#:
3138075
Mfg#:
CH122TIPOKT1
Ships on Oct 28, 2026
$3393.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 17.5mm With Black Conical Seat Bolts

ES#2748289 - 6-ECS-023 - Wheel Spacer & Bolt Kit - 17.5mm With Black Conical Seat Bolts - Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels - ECS - Audi

Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels 10X Entries Into Our F80 M3 Sweepstakes
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748289
Mfg#:
6-ECS-023
In Stock
ON SALE! SAVE 25%
$173.99

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

$130.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Service Kit

ES#4620204 - G055515A2KT - 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. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with sport diff

Brand:
Assembled By ECS - Corporate Logo
ES#:
4620204
Mfg#:
G055515A2KT
Ships on Nov 4, 2026
ON SALE!
$227.99

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

$211.90 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Motorsport StreetSport Engine Mounts - Pair

ES#4846368 - 034-509-0089 - Motorsport StreetSport Engine Mounts - Pair - Designed with extreme performance in mind and manufactured from billet aluminum and high-durometer Density Line rubber for better ride characteristics than polyurethane. - 034Motorsport - Audi

Designed with extreme performance in mind and manufactured from billet aluminum and high-durometer Density Line rubber for better ride characteristics than polyurethane. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4846368
Mfg#:
034-509-0089
In Stock
$677.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.5" High-Flow Downpipe

ES#3420821 - SSXAU673 - 2.5" High-Flow Downpipe - Featuring Milltek Sport Hi-Flow sports cat, fits with OE and Milltek cat-back systems. - Milltek Sport - Audi

Featuring Milltek Sport Hi-Flow sports cat, fits with OE and Milltek cat-back systems.

Brand:
Milltek Sport - Corporate Logo
ES#:
3420821
Mfg#:
SSXAU673
Ships on Nov 2, 2026
$3374.99

This product was last offered at the strikethrough price on
08-17-2026

$3374.78 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upper Guide Rail - Priced Each

ES#284640 - 079109470 - Upper Guide Rail - Priced Each - Upper rail that the left & right timing chains ride - Genuine Volkswagen Audi - Audi

Upper rail that the left & right timing chains ride

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284640
Mfg#:
079109470
In Stock
6% off MSRP

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

$15.99

This product was last offered at the strikethrough price on
10-09-2026

$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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Manufacturer names and/or part numbers are used only for identification purposes.

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