NTK 21528 Oxygen Sensor - Downstream, Downstream Right, Upstream or Upstream Right

Overview of NTK Direct Fit Oxygen Sensor 21528

The NTK Direct Fit Oxygen Sensor 21528 is designed for precise emission control in select Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Pontiac vehicles. This heated oxygen sensor features a specific fitment to ensure reliable performance and compatibility with various models including the Chevrolet Camaro, Pontiac Firebird, and Buick LeSabre.

• Heated oxygen sensor for faster warm-up and accurate readings
• Specific fitment for select Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Pontiac models
• 12.5-inch wiring harness length for optimal installation flexibility
• Threaded mounting type with 18mm thread diameter for secure attachment
• Four-wire design for enhanced sensor functionality and durability

Detailed Product Description

The NTK Direct Fit Oxygen Sensor 21528 is engineered to meet the exact specifications of your vehicle’s emission system. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings, which are critical for engine control and emissions reduction. The sensor’s 12.5-inch wiring harness length allows for convenient routing and connection within the engine bay. Its threaded mounting type with an 18mm diameter ensures a secure and leak-free installation. The four-wire configuration supports both the sensor signal and heater circuit, enhancing responsiveness and longevity.

This oxygen sensor is specifically designed for compatibility with a range of vehicles including the Chevrolet Impala, Pontiac Grand Prix, Buick Park Avenue, and GMC Sonoma, among others. The NTK Direct Fit Oxygen Sensor product line focuses on delivering precise fitment and reliable performance, reducing the need for modifications or adapters during installation.

Common Applications and Issues Addressed

• Restores proper air-fuel mixture readings for improved engine efficiency
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by maintaining accurate sensor data
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports smooth engine performance and compliance with emission standards

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use a proper oxygen sensor socket or wrench to prevent damage during removal and installation
• Verify the wiring harness length and connector type match the vehicle’s factory setup
• Apply anti-seize compound on the sensor threads if not pre-coated to ease future removal
• Clear any diagnostic trouble codes after installation to reset the engine control unit

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet OEM standards for durability and performance. The Direct Fit Oxygen Sensor 21528 undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, NTK typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.