NTK 23558 Oxygen Sensor - Downstream, Upstream or Upstream Right

Direct-Fit Oxygen Sensor

The NTK 23558 is a specific-fit heated oxygen sensor built for direct replacement applications. It uses a threaded mounting design and a 4-wire configuration with a 38.7500 wiring harness length for the listed applications.

Compatible With Mitsubishi Eclipse, Mitsubishi Galant, Mitsubishi Montero Sport, Mitsubishi Diamante, and Eagle Talon applications where the fitment matches the cataloged position and notes. This NTK oxygen sensor is part of the Direct Fit Oxygen Sensor line, which focuses on OE-style fit, form, and function.

Key Features

• Heated oxygen sensor for emissions system monitoring
• Specific-fit design for cataloged vehicle applications
• Threaded mounting type for direct installation
• 4-wire configuration for the listed applications
• 38.7500 wiring harness length
• NTK 23558 part number for application matching

Detailed Description

NTK 23558 is an oxygen sensor engineered for direct-fit replacement in the applications shown below. The sensor is designed with a threaded mount, heated operation, and a 4-wire layout to match the original equipment style used in the listed Mitsubishi and Eagle applications. Fitment includes downstream and upstream positions, including upstream right applications where specified. NTK 23558 is built to meet OE-level expectations for fit and function, and it cross-references Bosch 13425 and Delphi ES20030 for the same application.

What It Helps Fix

• Check engine light concerns related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn sensor
• Emissions test failures caused by sensor degradation
• Slow or inaccurate exhaust oxygen feedback to the engine control system
• Fitment issues when replacing a direct-fit sensor with the correct OE-style part

Installation Notes

Install only in the positions listed in the fitment data for the exact year, make, and model. Verify the sensor location, emissions configuration, and connector/wiring match before installation. Use the part number 23558 to confirm application coverage before ordering.

Quality Assurance

NTK is a major original equipment oxygen sensor supplier, and its sensors are manufactured and tested to meet or exceed OE specifications. The Direct Fit Oxygen Sensor line is built around application coverage and OE-style replacement performance.