NTK 22104 Oxygen Sensor - Downstream

Direct Fit Oxygen Sensor Overview

NTK 22104 is a direct fit heated oxygen sensor built for specific applications with threaded mounting and a 4-wire design. It is engineered for accurate exhaust monitoring and OE-style fitment on select Mazda 626 models.

Fits 2001-2002 Mazda 626, downstream. Fits 2000 Mazda 626, downstream, Calif. emissions.

Key Features

• Heated oxygen sensor for faster operating response.
• Specific-fit design for direct replacement applications.
• 17-inch wiring harness length for application-specific routing.
• Threaded mounting with 18 mm thread diameter.
• NTK direct fit line focused on OE-style coverage.

Detailed Description

NTK 22104 is part of the Direct Fit Oxygen Sensor line, which is built to streamline replacement selection while maintaining application-specific fit, form, and function. As an oxygen sensor for the Mazda 626, it supports downstream exhaust feedback on the listed vehicles and uses a heated, 4-wire configuration with threaded installation. The part number 22104 is also useful when cross-checking catalog listings for the same application.

This part cross-references Bosch 15265 and Delphi ES20100 for the same application.

What It Is Used For

• Replacing a worn or slow-responding downstream oxygen sensor.
• Addressing oxygen sensor fault codes tied to exhaust feedback.
• Restoring proper air-fuel monitoring in emissions control systems.
• Correcting drivability issues caused by inaccurate sensor readings.

Installation Notes and Quality Assurance

Verify connector style, harness length, thread diameter, and vehicle emissions configuration before installation. This sensor uses a threaded mounting style and a specific-fit layout for the listed Mazda 626 applications. NTK states these oxygen sensors are extensively tested during manufacturing and are built to meet or exceed OE specifications. Part number 22104 identifies this exact application match.