NTK 24006 Oxygen Sensor - Upstream

Direct Fit Oxygen Sensor for Import Applications

The NTK Direct Fit Oxygen Sensor 24006 is a specific-fit, threaded upstream sensor built for air/fuel ratio monitoring in select Ford, Mazda, and Mercury vehicles. With a 21.75-inch wiring harness, 1-wire non-heated design, and 18 mm thread diameter, it is a direct replacement for the original sensor location.

NTK’s oxygen sensor line is developed with ceramic manufacturing expertise and OE application coverage in mind. This NTK 24006 oxygen sensor is built to match original equipment fit, form, and function for vehicles such as the Mazda 626, Mazda RX-7, and Mercury Capri.

Key Features

• Direct Fit Oxygen Sensor, part number 24006
• Specific-fit replacement for upstream Bank 1 Sensor 1 applications
• Non-heated, 1-wire design
• 21.75-inch wiring harness length
• Threaded mounting with 18 mm thread diameter
• OE-style fitment for select Ford, Mazda, and Mercury models

Product Details

NTK 24006 is an upstream oxygen sensor used to monitor exhaust oxygen content and support air/fuel ratio control in older import and domestic applications. It is engineered as a direct replacement for original equipment sensor locations, with application coverage that includes 1983-1985 Mazda 626, 1984-1985 Mazda RX-7, 1986-1989 Mazda 323, 1986-1989 Mazda 626, 1986-1989 Mazda RX-7, 1987-1989 Mercury Tracer, 1987-1988 Mazda B2600, 1988-1989 Mazda MX-6, 1988-1989 Ford Festiva, 1989 Ford Probe, and 1991-1994 Mercury Capri. This part cross-references Bosch 12054 for the same application.

What It Helps Address

• Faulty upstream oxygen sensor readings
• Check engine light concerns related to oxygen sensor performance
• Air/fuel ratio control issues
• Rough idle or drivability problems tied to sensor signal loss
• Emissions test failures caused by a worn sensor

Installation Notes and Tips

Verify the vehicle’s original sensor location before ordering, since this part is listed for upstream Bank 1 Sensor 1 positions only. Confirm the threaded mounting style, 18 mm thread diameter, and harness length against the original sensor connector and routing. For best results, compare the old sensor’s wire count and connector style to the NTK 24006 before installation.

Quality Assurance

NTK is a major original equipment oxygen sensor manufacturer, and this sensor is manufactured and tested to meet or exceed OE specifications for fit and reliability. The NTK Direct Fit Oxygen Sensor line is supported by OE application coverage and manufacturing controls focused on ceramic sensor performance.