GM GENUINE PARTS Heated Oxygen Sensor 213-4229 (12609457) OE-Fit Heated O2 Sensor — Fast Warm-Up, Direct Replacement

This heated oxygen sensor is designed, engineered, and tested to General Motors specifications and serves as a direct-fit replacement for the original factory sensor installed in compatible GM vehicles. By monitoring the oxygen proportion in exhaust gases, the sensor provides the feedback the engine control module (ECM) needs to correct fuel delivery and maintain the intended air/fuel ratio. The result is a properly functioning emissions system, predictable driveability, and the durability expected from GM Genuine Parts.

How does this heated oxygen sensor affect my vehicle's fuel economy and emissions?

The sensor supplies real-time oxygen readings that let the ECM adjust fuel injection for a near-stoichiometric air/fuel ratio. When the ECM receives accurate data, it reduces wasted fuel and keeps emissions closer to designed levels without aftermarket guesswork.

• Heated element reduces warm-up time for accurate readings sooner after startup
• Direct OE fit ensures proper positioning in the exhaust stream for reliable data
• Durability and calibration match GM specifications to maintain long-term performance

What makes this GM Genuine Parts sensor different from generic O2 sensors?

GM Genuine Parts are manufactured to the original equipment (OE) specifications used during vehicle production or validated by General Motors. That means connectors, thread sizes, and sensor behavior match the vehicle’s ECM expectations without requiring reprogramming or wiring modifications.

• Factory-style connector and female gender match the original harness without adapters
• Calibrated response curve compatible with GM ECM strategies
• Tested to GM standards for fit, form, and function for straightforward replacement

When should I replace the 213-4229 (12609457) Heated Oxygen Sensor?

Replace the sensor if you experience persistent check-engine lights related to O2 circuits, poor fuel economy, rough idle, or failed emissions tests. Symptoms often appear after prolonged use, contamination, or damage from exhaust leaks or impact.

• Illuminated Malfunction Indicator Lamp (MIL) with O2 or fuel trim codes
• Noticeable drop in MPG or inconsistent idle and throttle response
• After failed emissions testing or when recommended in vehicle maintenance schedules

How straightforward is installation and compatibility with my GM vehicle?

The 213-4229 (12609457) is produced as a GM-recommended replacement and is engineered for direct fitment in compatible models. Installation typically requires basic tools and safe exhaust system access; professional installation is recommended when rusted or hard-to-reach hardware is present.

• Female connector matches factory harness to avoid splicing
• Thread and sensor length conform to GM OE dimensions for correct placement
• Fits vehicles listed by GM for part number 213-4229 / 12609457—check fitment before purchase

Who is this for? The GM Genuine Parts 213-4229 (12609457) Heated Oxygen Sensor is for owners and technicians who need an OE-quality replacement for GM vehicles, prefer parts validated by General Motors, and want a direct-fit sensor that meets factory specifications. Choose this part if you need reliable oxygen measurement for ECM fuel control, want to restore emissions performance, or require a sensor that installs without wiring or calibration changes.