ACDelco GM Genuine Parts Heated Oxygen Sensor 213-939 Fits select: 2001-2002 CHEVROLET SILVERADO, 2002 CADILLAC ESCALADE

An ACDelco GM Original Equipment Oxygen (O2) Sensor is a GM-recommended replacement for your vehicle’s original component, and is a special feedback sensor on your vehicle’s exhaust system. This sensor measures the proportion of oxygen in the exhaust gases. Using this measurement, the engine management computer can adjust the air/fuel ratio near the optimum value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. This original equipment oxygen sensor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Detect oxygen content in the exhaust gases to optimize emissions and fuel economy 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 Fits Select: 2001-2002 CHEVROLET SILVERADO 8 Cyl 6 L 2002 CADILLAC ESCALADE 8 Cyl 6 L 2001-2002 GMC SIERRA 8 Cyl 6 L 2002 GMC YUKON 8 Cyl 6 L 2001-2002 GMC YUKON XL 8 Cyl 6 L 2001 GMC DENALI 8 Cyl 6 L 2000 CHEVROLET GMT-400 8 Cyl 7.4 L 2001-2002 CHEVROLET SUBURBAN 8 Cyl 6 L 2002 CHEVROLET AVALANCHE 8 Cyl 8.1 L 2001-2002 GMC NEW SIERRA 8 Cyl 6 L 2000 GMC SIERRA 8 Cyl 7.4 L 2001 CHEVROLET EXPRESS CUTAWAY 8 Cyl 8.1 L 2002 CHEVROLET EXPRESS G3500 8 Cyl 8.1 L 2001-2002 GMC SAVANA 8 Cyl 8.1 L and more - add your vehicle to our fit widget to check