Original Magneti Marelli part.
Converts knock, detonation, and mechanical vibrations into electric signals.
Often the source of failure when turbo boost issues are present.
Prevents over boosting
Applications:
ALL 2.0, 2.5, 2.8, 3.2 Liter. Biturbo engines with Fuel Injection.
Includes 18v and 24v models, including Quattroporte IV, and Shamal V8's