GM GENUINE PARTS Heated Oxygen (O2) Sensor 213-4537 / 12606671 — Direct-Fit, Heated Element for Faster Warm-Up

If your vehicle is running inefficiently or a check-engine light points to an O2 sensor fault, this GM Genuine Parts heated oxygen sensor is a direct-fit replacement built to the original equipment specifications used by General Motors. Designed, tested, and validated by GM, it measures oxygen content in exhaust gases and provides the engine control module (ECM) with the feedback needed to maintain the ideal air/fuel ratio for performance and fuel efficiency.

How does this heated O2 sensor affect engine performance?

The sensor continually monitors exhaust oxygen levels and sends voltage signals to the ECM. With precise data, the ECM adjusts fuel injection and timing to approach the stoichiometric ratio, which helps maintain smooth running, efficient combustion, and stable idle behavior.

• Heated element reduces warm-up time for quicker, accurate readings
• Direct-fit design matches factory connector and thread size
• Improved combustion control when installed and calibrated

What makes a GM Genuine Parts O2 sensor different from aftermarket options?

GM Genuine Parts are produced to the same specifications as the parts installed at the factory or validated by GM, so fit, function, and durability mirror the original component. That means fewer compatibility issues and predictable operation across GM vehicles compared with generic or unverified alternatives.

• Manufactured to GM OE specification for consistent performance
• Vehicle-specific fit reduces installation time and error
• Backed by General Motors’ validation and quality controls

How do I know when to replace the heated oxygen sensor?

Common indicators include an illuminated check-engine light with an O2-related code, decreased fuel economy, rough idle, or failed emissions testing. Because the sensor uses a heated element and sensitive chemical coatings, it can degrade over time and exposure to contaminants.

• Diagnostic trouble codes related to O2 sensor circuit or efficiency
• Notable drop in MPG or unstable engine idle
• Age and mileage: sensors often require replacement after extended service

How should this sensor be installed and maintained?

Installation requires matching the part number to your vehicle and using the correct torque and anti-seize on threads if recommended. Avoid using cleaners or lubricants that can contaminate the sensing element; if you’re unsure, a professional technician or dealership service center can install and verify operation.

• Confirm vehicle-specific part compatibility before purchase
• Use proper torque and electrical connections for reliable function
• Do not spray the sensing tip with solvents that could damage the element

Who is this for: The GM Genuine Parts 213-4537 (12606671) heated oxygen sensor is ideal for owners and technicians working on GM vehicles who want a factory-spec replacement. It’s suited for drivers seeking OE fit and predictable emissions and fuel economy recovery, as well as repair shops that rely on validated GM components for warranty and quality assurance.