NTK 23514 Oxygen Sensor - Intermediate or Upstream

Direct Fit Oxygen Sensor

NTK 23514 is a direct fit oxygen sensor built for specific import applications with heated, threaded construction and a 4-wire design. It is engineered for accurate air-fuel feedback and OE-style fitment in emissions control systems.

Key Features

• Direct fit design for specific applications
• Heated oxygen sensor with 4-wire configuration
• Threaded mounting type with 18 mm thread diameter
• 16.75 in. wiring harness length
• NTK 23514 is part of the Direct Fit Oxygen Sensor line

Detailed Description

NTK 23514 is a direct fit oxygen sensor from NTK, The Sensor Specialist, with coverage for select Eagle Summit, Mitsubishi Mighty Max, Mitsubishi Expo, Mitsubishi Expo LRV, Dodge Colt, Plymouth Colt, and Dodge Ram 50 applications. The sensor uses NTK's OE-focused manufacturing approach, with ceramic expertise carried through from raw material to finished product. As an oxygen sensor for emissions control, it helps provide the signal needed for fuel control and catalyst monitoring in the listed applications. This part cross-references DENSO Auto Parts 234-4638 for the same application.

What It Is Used For

• Replacing a worn or slow-responding oxygen sensor
• Restoring proper air-fuel ratio feedback
• Addressing check engine light concerns related to sensor performance
• Supporting emissions system monitoring
• Correcting drivability issues tied to inaccurate exhaust feedback

Installation Notes and Tips

Verify the application by year, make, model, position, and emissions notes before installation. This sensor uses a threaded mount and a specific 4-wire heated configuration, so connector and harness routing should match the original part. Confirm the listed upstream or intermediate location and the California or federal emissions notes for the vehicle before ordering.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand is part of the NGK family of products and is recognized as a major original equipment oxygen sensor supplier.