ACDelco 213-969 GM Original Equipment Ignition Knock (Detonation) Sensor Product Features GM-recommended replacement part for your GM vehicles original factory component Offering the quality, reliability, and durability of GM OE Manufactured to GM OE specification for fit, form, and function Product Specifications Brand: ACDelco Item Weight: 3 ounces Product Dimensions: 7.8 x 6.9 x 1.1 inches Item model number: 213-969 Manufacturer Part Number: 213-969 OEM Part Number: 12567711 Shipping Weight: 3.2 ounces Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. International Shipping: This item is not eligible for international shipping. Learn More Date First Available: November 11, 2005 Why Buy From JandJ Ultra? Highly Trusted Seller Over 99.7% Positive Feedback FAST Shipping and Tracking HUGE Discounts Excellent Returns Policy The BEST Customer Service Shipping & Returns We Ship International! 14 Day Money Back Return Policy Items Ship within 24-48 Hours Product Description 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. Thank You For Your Business!