Audi S4 Engine Parts & Accessories
- Cooling
- Covers
- Drive Belts
- Electrical
- Emissions
- Fastener Kit
- Filter
- Fuel
- Gaskets & Seals
- Ignition
- Intake
- Mechanical
- Mount
- Oil Service
- Performance
- Pulleys
- Skid Plate
- Software
- Supercharger
- Timing
- Tools
- Turbocharger
- Vacuum System
- Clearance
Upgrade your Milltek system to Valve Sonic
Up to the 2012 model year
This product was last offered at the strikethrough price on
10-26-2026
Keep your engine running smooth
Used to circulate coolant as determined by the ECU
We Price Match - Give Us A Call or Chat!
Increases the filter’s surface area and is washable, compared to standard filters which trap dust on the surface.
Replaces the failure-prone factory diaphragm for rock-solid boost control
This product was last offered at the strikethrough price on
10-26-2026
Replace worn, cracked, or leaking vacuum lines and low-pressure fuel hoses with this direct-fit OEM-style bulk hose.
2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Securely mount an Odyssey battery in your Audi
Securely mount an Odyssey battery in your Audi and add provisions for a switch
Securely mount an Odyssey battery in your Audi
Securely mount an Odyssey battery in your Audi
Securely mount an Odyssey battery in your Audi and add provisions for a switch
Securely mount an Odyssey battery in your Audi and add provisions for a switch
Manifold absolute pressure sensor, lets your ECU know how much air pressure is in your intake manifold
Located on the rear of the supercharger
This product was last offered at the strikethrough price on
05-07-2026
Includes the spark plug boot
This product was last offered at the strikethrough price on
05-07-2026
Controls actuation of the Combi Valve or Diverter Valve
Engine codes ATW & AWM
This product was last offered at the strikethrough price on
05-07-2026