NTK 24239 Oxygen Sensor - Upstream Left or Upstream Right

Direct-Fit Oxygen Sensor

NTK 24239 is a direct-fit heated oxygen sensor built for specific applications with threaded mounting and a 4-wire design. It is engineered for accurate exhaust feedback and OE-style fitment on select Acura RL applications.

• Direct-fit replacement for specific applications
• Heated oxygen sensor design for faster operating response
• 4-wire configuration with threaded mounting
• 22.75-inch wiring harness length
• NTK 24239 part number for easy identification

Detailed Application Coverage

Fits 2004 Acura RL, upstream right, and fits 2004 Acura RL, upstream left. This NTK oxygen sensor is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific coverage and OE-style installation characteristics. NTK 24239 is manufactured with ceramic expertise and tested during production to meet or exceed OE specifications for fit, form, and function. This part cross-references Continental 15481 and Dayco 15480 for the same application.

What It Helps Address

• Faulty oxygen sensor readings
• Check engine light concerns related to sensor performance
• Incorrect air-fuel feedback to the engine control system
• Slow sensor response from a worn heated sensor

Installation Notes and Tips

Confirm the upstream position and bank designation before installation. Match the threaded mounting style, wire count, and harness length to the original sensor. Verify connector routing and exhaust thread condition during replacement on Acura RL applications.

Quality Assurance

NTK is a major original equipment oxygen sensor manufacturer, and this sensor is extensively tested during production to support reliable operation and OE-level specifications.