NTK 23523 Oxygen Sensor

Direct Fit Oxygen Sensor for OE-Style Replacement

NTK 23523 is a direct fit heated oxygen sensor built for specific applications that require OE-style fit, form, and function. It is engineered for import and domestic vehicles, including Mitsubishi Endeavor, Mitsubishi 3000GT, Mitsubishi Montero Sport, Mitsubishi Montero, Mitsubishi Diamante, and Dodge Stealth applications listed below.

As part of the NTK Direct Fit Oxygen Sensor line, this sensor is designed to match original equipment mounting and electrical requirements for a straightforward replacement on the correct downstream or upstream location.

Key Features

• Heated oxygen sensor for faster operating temperature and emissions feedback
• Specific fit design for direct replacement on listed applications
• 4-wire configuration with a 34.7500 wiring harness length
• Threaded mounting type with 18.000 thread diameter
• OE-style design developed for fit, form, and function
• Manufactured and tested to meet or exceed OE specifications

Product Details

NTK is a major original equipment oxygen sensor supplier, and the 23523 reflects that OE-focused engineering approach. The sensor uses ceramic technology controlled from raw material through finished product, supporting consistent signal performance and reliable operation in emissions control systems. For shoppers searching for an oxygen sensor for 2010-2011 Mitsubishi Endeavor downstream rear, or a direct fit oxygen sensor for 1994-1996 Dodge Stealth downstream right, this part number provides a targeted replacement option. It also serves Mitsubishi 3000GT, Montero Sport, Montero, and Diamante applications where the listed position and emissions notes match the vehicle.

This part cross-references Bosch 13412 and DENSO Auto Parts 234-4655 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a worn sensor
• Slow sensor response during closed-loop operation
• Emissions test failures tied to upstream or downstream sensor faults
• Rough idle or drivability issues caused by inaccurate exhaust oxygen readings

Installation Notes and Tips

• Verify the exact year, make, model, and sensor position before ordering.
• Match the listed upstream or downstream location to the vehicle’s original sensor placement.
• Confirm the 4-wire connector style and threaded mounting configuration before installation.
• Inspect the harness routing and connector condition during replacement.
• Clear diagnostic trouble codes and confirm proper sensor operation after installation.

Quality Assurance

NTK manufactures oxygen sensors with extensive testing during production to support quality and reliability that meets or exceeds OE specifications. The brand’s OE supply background and application coverage make NTK 23523 a technical replacement choice for the listed Mitsubishi and Dodge applications.

Compatible Applications

• Fits 2010-2011 Mitsubishi Endeavor, downstream rear
• Fits 2004-2008 Mitsubishi Endeavor, downstream rear
• Fits 1997-1999 Mitsubishi 3000GT, downstream left
• Fits 1997-1999 Mitsubishi Montero Sport, upstream left
• Fits 1994-1997 Mitsubishi 3000GT, downstream right
• Fits 1997 Mitsubishi Montero, upstream left
• Fits 1994-1996 Dodge Stealth, downstream right
• Fits 1994-1996 Mitsubishi Diamante, downstream right
• Fits 1994-1995 Dodge Stealth, downstream right
• Fits 1994-1995 Mitsubishi 3000GT, downstream right