ACDelco 2131699 GM Genuine Parts Heated Oxygen Sensor

The ACDelco 2131699 is a GM Genuine Parts heated oxygen sensor designed as a direct replacement for your vehicle's original component. This 4-wire O2 sensor is engineered specifically for GM vehicles including Buick, Cadillac, Chevrolet, GMC, and Pontiac models, providing the same performance and durability you expect from General Motors original equipment.

Key Features:

• Measures oxygen proportion in exhaust gases to optimize engine performance
• Enables the engine control module to adjust air/fuel ratio to the optimal 14.7:1 ratio
• Improves fuel economy, reduces emissions, and enhances engine performance
• Features correct wiring harness length (257.5mm) engineered for your specific application
• Constructed with GM-validated sensor components and proper element type for emissions compliance
• Meets original equipment specifications for secure fit, form, and function
• Backed by ACDelco's 12-month/12,000-mile warranty

This genuine GM oxygen sensor (OEM 12576131) is manufactured to rigorous standards and has been validated by General Motors engineers. Using the correct OE-specification sensor ensures proper emissions control and prevents issues such as increased nitrogen dioxide emissions, higher exhaust temperatures, or loss of engine power that can result from using non-compliant sensors.