GM recommended replacement part for your GM vehicle’s original factory component.
Offering the quality, reliability, and durability of GM OE.
Manufactured to GM OE specification for fit, form, and function.
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Imported from USA.
An ACDelco GM Original Equipment Ignition Knock (Detonation)
Sensor monitors the engine for pinging or spark knock, and is a
GM-recommended replacement for your vehicle’s original component.
The sensor creates a voltage signal based on the vibrations
caused by erratic air/fuel mixture combustion; the engine control
module uses this signal to adjust the ignition timing and
air/fuel mixture. This original equipment ignition knock sensor
has been manufactured to fit your GM vehicle, providing the same
performance, durability, and service life you expect from General
ACDelco 213-3521 GM Original Equipment Ignition Knock (Detonation) Sensor