Shut down quickly & remotely - required by many racing organizations
Audi S4 Engine Electrical Parts
- Alternator
- Battery
- ECU
- Fuse Panel
- Harness
- Ignition
- N205 Valve
- N249 Valve
- N428 Valve
- N75 Valve
- Pump
- Relays
- Sensors
- Starter
- Throttle Body
- Wire Covering
Replacement 4-pin/40 amp relay
This product was last offered at the strikethrough price on
07-08-2026
This product was last offered at the strikethrough price on
08-26-2026
Found near the relay panel under the dashboard
For cabriolet models only
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-31-2026
Valve that controls cam adjustment (Camshaft solenoid adjuster)
Keep your engine running smoothly
Fits left front & right rear
The CT5 POWERSPORT (part# 40-339) makes sure you're ready for action every time.
Keep your engine running efficiently
Fits left and right rear position
Updated <font color='green'>Green</font> sensor with square/round connector. Please check existing sensor color
2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Senses engine oil pressure for the ECU and warning light. 1.2-1.6 BAR
We Price Match - Give Us A Call or Chat!
This product was last offered at the strikethrough price on
09-03-2026
Keep your engine running strong
We Price Match - Give Us A Call or Chat!
Keep your engine running smooth
This product was last offered at the strikethrough price on
05-02-2026
Also know as the RPM Reference sensor or Impulse Sender
We Price Match - Give Us A Call or Chat!
Automatic transmission models
This product was last offered at the strikethrough price on
08-13-2026
Protects the voltage regulator
For Bosch style alternator
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-06-2026
Shut down quickly & remotely - required by many racing organizations
Measures cam position and relays it to the ECU