NTK 21567 Oxygen Sensor - Upstream Left or Upstream Right

Direct-Fit Oxygen Sensor

NTK Direct Fit Oxygen Sensor 21567 is a specific-fit heated oxygen sensor built for emission control applications. It uses a threaded mounting design and a 4-wire configuration with a 38.5-inch harness for direct replacement service.

Key Features

• Heated oxygen sensor for precise exhaust feedback
• Specific-fit design for direct application matching
• Threaded mounting type for secure installation
• 4-wire construction with 38.5-inch wiring harness
• 18 mm thread diameter

Fitment Details

Compatible with 2006-2009 Cadillac XLR, upstream right. Compatible with 2006-2009 Cadillac XLR, upstream left. This part cross-references Carlson 15144 for the same application.

What It Is Used For

• Replacing a worn or slow-responding oxygen sensor
• Restoring accurate air-fuel ratio feedback
• Addressing sensor-related check engine light concerns
• Correcting emissions monitoring faults tied to exhaust sensing

Installation Notes and Tips

Verify the connector, harness length, thread diameter, and mounting style before installation. This NTK oxygen sensor 21567 is a direct-fit replacement, so it should match the original sensor configuration on the vehicle. Confirm the upstream left or upstream right location before ordering for Cadillac XLR applications.

Quality Assurance

NTK is part of the NGK family and is a major original equipment oxygen sensor supplier. Each sensor is extensively tested during manufacturing to meet or exceed OE specifications for fit, form, and function.