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GM Original Equipment
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 specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Features & Benefits:
  • Undergo the same stringent testing process as the original part
  • 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
Wire Harness IncludedNo
Terminal TypeBlade
Mounting Hardware IncludedYes
Connector Quantity1
Connector ShapeOval
Terminal Quantity2
Connector GenderFemale
Overall Length2.04 IN
Overall Length51.82 MM
Threaded End Diameter0.31
Threaded End Diameter8 mm
Alternate/OEM Part Number(s): 12566845, 12618603, 2131575

Warranty Information:
24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18; 12 Months on parts sold before 04/01/18.
Warranty Details