NTK 21512 Oxygen Sensor

Direct Fit Oxygen Sensor for Mitsubishi and Chrysler

Restore accurate exhaust feedback with this NTK direct fit oxygen sensor, part number 21512. It is a specific-fit, heated sensor with a threaded mounting design and a 4-wire configuration for applications that require OE-style replacement performance.

• Specific-fit oxygen sensor for direct replacement applications
• Heated sensor design for faster operating response
• 4-wire construction with threaded mounting
• 18.5-inch wiring harness length
• NTK 21512 for select Mitsubishi, Chrysler, and Dodge applications

Application Coverage

This NTK oxygen sensor is used across select Mitsubishi Outlander, Eclipse, Endeavor, Galant, Lancer, Diamante, and Mirage applications, plus Chrysler Sebring and Dodge Stratus listings. Fitment includes upstream, upstream front, upstream rear, upstream left, and upstream right positions depending on the vehicle and emissions configuration. Fits 2007-2013 Mitsubishi Outlander, upstream; Fits 2001-2012 Mitsubishi Eclipse, upstream front and upstream rear; Fits 2001-2005 Chrysler Sebring, upstream left and upstream right; Fits 2001-2005 Dodge Stratus, upstream left and upstream right.

Key Features

• Heated sensor helps the unit reach operating temperature quickly
• Threaded mounting type supports OE-style installation
• Specific fit application for confirmed vehicle coverage
• 18.5-inch harness length for listed installations
• NTK 21512 cross-references select OE-style replacement numbers for the same application

What It Helps Address

• Check engine light caused by a failing oxygen sensor
• Incorrect air-fuel feedback from an aging sensor
• Slow sensor response during warm-up
• Emissions test failures related to sensor performance
• Rough drivability tied to inaccurate exhaust readings

Installation Notes and Tips

Confirm the exact year, model, position, and emissions notes before ordering. This sensor uses a threaded mount and a 4-wire layout, so the connector routing and harness length should match the original application. Review the fitment notes for California emissions, Bank 1 Sensor 1, and manifold catalyst references where listed.

Quality Assurance

NTK is part of the NGK family and is a major original equipment oxygen sensor manufacturer. This sensor is manufactured and tested to meet or exceed OE specifications for fit, form, and function.