NTK 22543 Oxygen Sensor - Downstream Left or Downstream Right

Direct Fit Oxygen Sensor

NTK 22543 is a direct fit heated oxygen sensor built for specific applications with threaded mounting and a 4-wire design. It uses a 29.5-inch harness and an 18 mm thread diameter for OE-style replacement on the correct exhaust location.

As part of NTK's Direct Fit Oxygen Sensor line, this sensor is engineered for streamlined coverage and application-specific fitment. NTK 22543 is backed by the brand's OE sensor manufacturing experience and extensive production testing for fit, form, and function.

Key Features

• Heated oxygen sensor for faster operating response.
• Specific-fit design for direct replacement applications.
• Threaded mounting with 18 mm thread diameter.
• 4-wire configuration with 29.5-inch harness length.
• NTK 22543 part number for catalog and service matching.

Fitment Details

Compatible with 2015 Ford Transit-150, downstream right and downstream left. Compatible with 2015 Ford Transit-250, downstream right and downstream left. Compatible with 2015 Ford Transit-350, downstream right and downstream left. Compatible with 2015 Ford Transit-350 HD, downstream right and downstream left.

This part cross-references Ford (e.g., CK4Z9G444A, CK4Z9G444B) for the same application.

What It Helps Address

• Faulty oxygen sensor readings.
• Check engine lights related to exhaust monitoring.
• Slow sensor response from a worn heated sensor.
• Incorrect air-fuel feedback affecting engine management.

Installation Notes

Use the vehicle's original sensor location and confirm connector and harness routing before installation. Verify thread size and downstream placement against the removed sensor to ensure correct application match. NTK 22543 is a specific-fit sensor, so matching the exact vehicle and position is important.

Quality Assurance

NTK manufactures oxygen sensors with OE application technology and tests them during production to meet or exceed original equipment specifications. Part number 22543 reflects NTK's direct fit sensor line for application-specific replacement.