S4 (B8)

Product Details 10X Entries For Our 8Y RS3 Sweepstakes! For 3.0T owners chasing serious performance gains, a "dual pulley" upgrade is the go-to solution. While upgrading both the crankshaft and supercharger pulleys delivers an impressive bump in...

From the factory, Audi's 3.0T engine is equipped with a plastic thermostat housing. While sufficient when new, its plastic construction is prone to degradation over time. After enduring thousands of heat cycles and consistent exposure to chemical-rich...

Product Description: 034Motorsport's Street Density Rear Shock Mounts for the B8/B8.5 Audi A4/S4/RS4, A5/S5/RS5, & Q5/SQ5 are engineered for increased performance and durability over the factory rear shock mounts. Featuring 70A Durometer Density...

'APR Sideburn' Decal Sets Let everyone know you're APR tuned with these stylish fender decals. Die cut APR decal High quality vinyl Includes both sides Attractive design Exterior application only. Recommended for Professional Install.

So you changed the look of the front and rear of your B8/B8.5 A4 or S4 but forgot the sides?  Upgrade your exterior styling with the ECS Tuning Gloss Black Flat Side Splitters. These side skirts simply bolt on underneath the rocker panel with...

  034Motorsport ZTF-LP01 Wheels are light-pressure cast (Flowform) wheels that offer incredible strength, low weight, great looks, and affordable pricing. Rest assured that ZTF Wheels for your specific vehicle will fit perfectly without any...

Racingline Wheel Locking Wheel Nuts to suit Stud & Kit - M14x1.50Do you have a RacingLine Stud & Nut kit and want to add a little more security to your wheels?  The RacingLine Stud & Nut conversion kit is one of our most popular...

Fits B8 chassis up to the 2012 model year with manual and DSG transmissions only The road can throw a lot at the underside of your Audi, give it the protection it needs with the ECS Tuning Ultimate Street Shield Kit!  Each...

Fits B8.5 chassis from the 2013 model year with manual and DSG transmissions only The road can throw a lot at the underside of your Audi, give it the protection it needs with the ECS Tuning Ultimate Street Shield Kit!  Each...

Fits B8 chassis A4/S4/A5/S5 models up to the 2012 model year Protection of your undercarriage and oil pan is vital. Between giant potholes, speed bumps and bumpy terrain your vehicle is exposed to a variety of impacts that can ruin your...

Protection of your undercarriage and driveline is vital. Between giant potholes, speed bumps, and road debris your vehicle is exposed to a variety of impacts that can damage your drive shaft or other critical components...

Protection of your undercarriage and oil pan is vital. Between giant potholes, speed bumps and bumpy terrain your vehicle is exposed to a variety of impacts that can ruin your oil pan or other critical components. Protect your vitals with...

Protection of your undercarriage and transmission pan is vital. Between giant potholes, speed bumps and bumpy terrain your vehicle is exposed to a variety of impacts that can damage your transmission oil pan or other critical components...

CTS Turbo is proud to announce our lowering springs for the B8/B8.5 A4 Quattro / S4. All our springs are made with high-quality SAE 9254/DIN 54SiCr6 Spring Steel Wire, so you can be assured the springs are safe, strong and won’t fatigue with time...

RacingLine High-Output Ignition Coil Pack - R8 Style (Sold Individually) The RacingLine Higher-Output Ignition Coils are a direct plug-and-play upgrade from the OE ignition coils. Whether an engine is standard or Stage 3 tuned, it will immediately...

Gloss Red Valve Cover Upgrade kit for 3.0 Supercharged Audi modelsComplete with Gaskets and Hardware Valve covers do exactly as the name suggests, keeping the camshaft & valves covered from outside influence while keeping engine oil in for...