NTK 21064 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of NTK Direct Fit Oxygen Sensor 21064

The NTK Direct Fit Oxygen Sensor 21064 is designed for precise emission control in select GM vehicles. This heated oxygen sensor offers a specific fit for Buick, Chevrolet, GMC, Pontiac, and Saturn models, ensuring reliable performance and accurate air-fuel mixture readings.

• Heated oxygen sensor for faster warm-up and improved efficiency
• Specific fit for Buick, Chevrolet, GMC, Pontiac, and Saturn vehicles
• Threaded mounting type with 18mm thread diameter
• Four-wire design for enhanced signal accuracy
• 15-inch wiring harness length for optimal installation flexibility

Direct Fit Oxygen Sensor Product Line Details

The NTK Direct Fit Oxygen Sensor line is engineered to provide exact replacement sensors that match OEM specifications. This product line focuses on direct compatibility with specific vehicle makes and models, reducing installation time and ensuring proper sensor operation. The 21064 part number belongs to this line, offering a precise fit and reliable emission control for the listed GM vehicles.

Detailed Product Description

The NTK 21064 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving engine efficiency and reducing emissions. Its four-wire configuration supports both the sensor heater circuit and signal output, enhancing responsiveness and durability. The sensor’s 18mm threaded mounting type ensures secure installation in the exhaust system. With a 15-inch wiring harness length, this sensor provides sufficient reach for straightforward connection without excess slack.

Compatible Vehicles and Common Applications

• Buick LaCrosse, Allure
• Chevrolet Malibu, Equinox, Captiva Sport, Terrain, Outlook
• GMC Acadia, Terrain, Vue
• Pontiac G6, Solstice, G6
• Saturn Aura, Sky, Vue

Common Issues Addressed by NTK Oxygen Sensor 21064

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine performance problems such as rough idling or hesitation
• Sensor heater circuit failures causing delayed sensor response

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. The 21064 sensor’s threaded mounting type requires proper torque to prevent exhaust leaks. Use anti-seize compound on the threads if recommended by the vehicle manufacturer. Verify the wiring harness length of 15 inches is sufficient for your vehicle’s sensor location. Disconnect the battery before installation to prevent electrical shorts.

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. The Direct Fit Oxygen Sensor 21064 undergoes rigorous testing to ensure accurate sensor output and heater function. Warranty coverage details should be confirmed with the distributor or vehicle manufacturer, as they may vary by region.