body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; margin: 20px; } h2 { font-size: 1.5em; color: #2c3e50; margin-top: 30px; border-bottom: 2px solid #eee; padding-bottom: 5px; } p { font-size: 1em; margin-bottom: 15px; } ul { padding-left: 20px; margin-bottom: 20px; } ul li { margin-bottom: 10px; list-style-type: disc; } table { width: 100%; border-collapse: collapse; margin-bottom: 30px; } table th, table td { text-align: left; padding: 10px; border: 1px solid #ddd; font-size: 0.95em; } table th { width: 40%; font-weight: bold; } table tr:nth-child(even) { background-color: #fafafa; } Nitrogen Oxide Sensor Product Description This NOx sensor has been made to match the original equipment sensor on certain vehicle years, makes and models, properly restoring nitrogen oxide detection to comply with emissions regulations. Direct replacement - this replacement NOx sensor matches the function and performance of the original sensor on specified vehicles Restores performance - properly repairs nitrogen oxide detection to comply with regulations Application specific - reverse engineered from the original design on certain vehicle years, makes and models Trustworthy quality - backed by team of engineers and quality specialists in the United States Product Specifications Color: Silver Connector Color: Black and Silver Connector Gender: Female Connector Shape: Rounded Rectangle Finish: Plain Package Contents: 1 Sensor With Module Terminal Gender: Male Terminal Quantity: 6 Terminal Type: Pin Universal Or Specific Fit: Specific Wire Gauge Measurement: 20 AWG Wiring Harness Length: 920 mm OE Numbers 12671388 GENERAL MOTORS 19256344 GENERAL MOTORS Fitment Year Make Model Configuration Positions Application Notes 2010-2014 Chevrolet Express 2500 V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2010-2014 Chevrolet Express 3500 V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2010-2014 Chevrolet Express 4500 V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2011-2014 Chevrolet Silverado 2500 HD V8 403 6.6L (6599cc); Engine Desg. LML Downstream 2011-2014 Chevrolet Silverado 3500 HD V8 403 6.6L (6599cc); Engine Desg. LML Downstream 2010-2014 GMC Savana 2500 V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2010-2014 GMC Savana 3500 V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2010-2014 GMC Savana 4500 V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2011-2014 GMC Sierra 2500 HD V8 403 6.6L (6599cc); Engine Desg. LML Downstream 2011-2014 GMC Sierra 3500 HD V8 403 6.6L (6599cc); Engine Desg. LML Downstream 2011-2012 Chevrolet Silverado 2500 HD V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2011-2012 Chevrolet Silverado 3500 HD V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2011-2012 GMC Sierra 2500 HD V8 403 6.6L (6599cc); Engine Desg. LGH Downstream 2011-2012 GMC Sierra 3500 HD V8 403 6.6L (6599cc); Engine Desg. LGH Downstream Buy with confidence – If you encounter any issues with your Dorman product, simply reach out to us. We are committed to ensuring your satisfaction and will assist with any return or exchange requests that meet our policy guidelines. Why Choose Dorman? Dorman is a trusted leader in OE-style replacement parts, offering precision-engineered solutions for reliable performance. Each part undergoes rigorous testing to ensure durability, safety, and a seamless fit. Designed as a cost-effective alternative to OEM parts, Dorman provides high-quality replacements backed by expert engineering. Choose Dorman for dependable, long-lasting automotive solutions.