NTK 24051 Oxygen Sensor - Upstream

Direct Fit Oxygen Sensor for Mitsubishi Montero

The NTK 24051 is a direct fit heated oxygen sensor built for specific applications, including the 1990-1991 Mitsubishi Montero upstream position. It uses a threaded mounting design and a 4-wire configuration for a precise replacement match.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit design for direct replacement applications
• Threaded mounting type for secure installation
• 4-wire configuration with 49.25-inch wiring harness length
• 18 mm thread diameter

Detailed Description

NTK 24051 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific replacement parts rather than universal coverage. As an oxygen sensor for the Mitsubishi Montero, it is engineered to match the original fit, form, and function expected in OE-style emission control service. NTK’s background as a major original equipment oxygen sensor supplier supports the product’s emphasis on manufacturing consistency and application accuracy.

This part cross-references Monroe Shocks & Struts (e.g., 75-2180, 234-4837) for the same application.

What It Is Used For

• Replacing a worn or slow-responding oxygen sensor
• Restoring proper upstream exhaust feedback
• Addressing sensor-related check engine light concerns
• Supporting accurate air-fuel mixture control
• Replacing a damaged threaded sensor assembly

Installation Notes and Tips

Fits 1990-1991 Mitsubishi Montero, upstream. Confirm the bank and sensor location before installation, and verify the 4-wire connector and threaded mounting style match the original part. Use the part number 24051 to confirm application details before ordering or installation.

Quality Assurance

NTK tests oxygen sensors during manufacturing to help ensure quality and reliability that meet or exceed OE specifications. The 24051 is backed by NTK’s OE-focused engineering approach and application coverage.