NTK 22503 Oxygen Sensor

Direct Fit Oxygen Sensor for Ford and Mazda

The NTK 22503 is a direct fit heated oxygen sensor built for specific downstream and upstream applications across Ford Ranger, Ford Explorer, and Mazda truck models. It uses OE-equivalent design and a threaded mounting style to support accurate exhaust feedback and straightforward replacement on covered vehicles.

Key Features

• Heated oxygen sensor with 4-wire construction
• Specific fit design for direct replacement service
• 22.0000 wiring harness length for covered applications
• 18.000 thread diameter with threaded mounting type
• OE-equivalent design for select Ford Ranger and Mazda B-Series applications
• Part number 22503 for catalog and cross-reference lookup

Product Line Details

NTK Direct Fit Oxygen Sensors are part of the brand’s OE-focused sensor line. NTK applies ceramic manufacturing expertise and extensive production testing to deliver sensors that match original equipment form, fit, and function for import and domestic vehicles.

Detailed Description

NTK 22503 is engineered for direct replacement on a wide range of Ford and Mazda applications, including downstream oxygen sensor service on 2004-2011 Ford Ranger, 2004-2010 Mazda B2300, and 2004-2006 Ford Ranger and Mazda B3000/B4000 configurations. It also covers earlier upstream and downstream positions on select Ford Explorer, Mercury Mountaineer, Ford F-Series, Aerostar, Bronco, and Mazda Navajo models. This part cross-references Bosch 15718 and DENSO Auto Parts 234-4070 for the same application.

What This Oxygen Sensor Helps Address

• Check engine light concerns related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a worn sensor
• Slow or inaccurate exhaust oxygen readings
• Failed emissions inspection tied to sensor output issues
• Replacement needs for downstream or upstream sensor service on covered vehicles

Installation Notes and Fitment

Fits 2004-2011 Ford Ranger, downstream. Fits 2004-2010 Mazda B2300, downstream. Fits 2004-2006 Ford Ranger, downstream right and downstream left. Fits 2004-2006 Mazda B3000, downstream. Fits 2004-2006 Mazda B4000, downstream right and downstream left. Fits 2001-2003 Ford Ranger, downstream. Fits 2001-2003 Mazda B4000, downstream. Fits 1997-2001 Ford Ranger, downstream. Fits 1998-2001 Mazda B2500, downstream. Fits 1997-2000 Ford Explorer, downstream. Fits 1995-2000 Ford Ranger, downstream. Fits 1995-2000 Mazda B3000, downstream. Fits 1997-2000 Mazda B4000, downstream. Fits 1998 Ford Explorer, upstream left. Fits 1998 Mercury Mountaineer, upstream left. Fits 1993-1994 Ford Explorer, upstream left. Fits 1996-1997 Ford Aerostar, downstream. Fits 1997 Ford F-250 HD, downstream and upstream right. Fits 1996-1997 Ford F-350, downstream and upstream right. Fits 1995-1997 Ford Ranger, downstream. Fits 1995-1997 Mazda B2300, downstream. Fits 1996 Ford Bronco, downstream. Fits 1996 Ford E-150 Econoline, downstream right and downstream left. Fits 1996 Ford E-150 Econoline Club Wagon, downstream right and downstream left. Fits 1996 Ford E-350 Econoline, downstream. Fits 1996 Ford E-350 Econoline Club Wagon, downstream. Fits 1996 Ford F-150, downstream. Fits 1996 Ford F-250, downstream and upstream right and upstream left. Fits 1995-1996 Ford F-350, upstream right and upstream left. Fits 1995-1996 Ford Ranger, downstream right and downstream left. Fits 1995-1996 Mazda B4000, downstream right and downstream left. Fits 1995 Ford Aerostar, upstream. Fits 1993 Ford Aerostar, upstream. Fits 1990-1991 Ford Aerostar, upstream. Fits 1995 Ford E-350 Econoline, upstream. Fits 1995 Ford E-350 Econoline Club Wagon, upstream. Fits 1991-1995 Ford F-150, upstream. Fits 1995 Ford F-150, upstream. Fits 1995 Ford F-250, upstream right and upstream left and upstream. Fits 1991-1995 Ford F-250, upstream. Fits 1991-1995 Ford F-350, upstream. Fits 1994 Ford Aerostar, upstream. Fits 1992 Ford Aerostar, upstream. Fits 1991-1994 Ford E-250 Econoline, upstream. Fits 1991-1994 Ford E-350 Econoline, upstream. Fits 1991-1994 Ford E-350 Econoline Club Wagon, upstream. Fits 1993-1994 Ford Explorer, upstream right. Fits 1991-1994 Ford F-250, upstream. Fits 1993-1994 Ford F-350, upstream. Fits 1992-1994 Ford Ranger, upstream right and upstream left. Fits 1994 Mazda B3000, upstream right and upstream left. Fits 1994 Mazda B4000, upstream right and upstream left. Fits 1992-1994 Mazda Navajo, upstream. Fits 1993 Ford E-350 Econoline, upstream right and upstream left. Fits 1993 Ford E-350 Econoline Club Wagon, upstream right and upstream left. Fits 1991-1992 Ford Bronco, upstream. Fits 1991-1992 Ford E-350 Econoline, upstream right and upstream left. Fits 1991-1992 Ford E-350 Econoline Club Wagon, upstream right and upstream left. Fits 1992 Ford Explorer, upstream. Fits 1991-1992 Ford F-250, upstream. Fits 1991-1992 Ford F-350, upstream. Fits 1990-1992 Ford F-350, upstream. Fits 1992 Ford Ranger, upstream. Fits 1990-1992 Ford Ranger, upstream. Fits 1991 Ford E-250 Econoline Club Wagon, upstream right and upstream left and upstream. Fits 1991 Ford Explorer, upstream. Fits 1990-1991 Ford Ranger, upstream. Fits 1991 Ford Mazda Navajo, upstream. Fits 1990 Ford Bronco, upstream. Fits 1990 Ford E-150 Econoline, upstream. Fits 1990 Ford E-150 Econoline Club Wagon, upstream. Fits 1990 Ford E-250 Econoline, upstream. Fits 1990 Ford E-250 Econoline Club Wagon, upstream. Fits 1990 Ford E-350 Econoline, upstream. Fits 1990 Ford E-350 Econoline Club Wagon, upstream. Fits 1990 Ford F-150, upstream. Fits 1990 Ford F-250, upstream. Fits 1990 Ford F-350, upstream.

Installation Notes and Quality Assurance

Confirm the sensor position, connector style, thread size, and harness length against the original unit before installation. Because this is a specific-fit oxygen sensor, correct bank and sensor location are important for proper operation. NTK manufactures oxygen sensors to OE specifications and tests them during production to support fit, function, and reliability.