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ACDELCO 2134335
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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

ACDELCO Warranty Information:
Lifetime for ignition wires, gas-charged shocks & struts, belts, hoses, universal joints, steering racks & gears, and ACDelco Professional chassis parts. Limited lifetime wear-out warranty for DuraStop brake pads and shoes. All other DuraStop brake parts, carry a limited 12 months/12,000 mile warranty. 24 months/24,000 miles for load-carrying and air-adjustable shocks, steering dampers. 24 months/24,000 miles for Professional New and Reman Alternators and Starters purchased on or after 3/1/12. Limited Lifetime for Professional Reman Alternators and Starters purchased before 3/1/12. 3 Year for RapidFire Performance Spark Plugs, 100,000 miles for Professional Platinum Spark Plugs, 100,000 miles for Iridium Spark Plugs. Limited Lifetime for Radiators purchased on or after 1/1/2015. 12 months/12,000 miles for other parts. Warranty returns can not be processed without complete VIN information on return instructions. IMPORTANT A/C COMPRESSOR WARRANTY NOTE: If the A/C system or the vehicle is five years or older, ACDelco requires a system flush and proof of purchase of an A/C Orifice Tube or A/C Expansion Valve for an A/C Compressor warranty to be valid.
Warranty Details