Walker 350-33014 Oxygen Sensor

Walker 350-33014 Oxygen Sensor Overview

Walker Products 350-33014 is a heated oxygen sensor built as a specific-fit OE replacement for select Ford, Lincoln, and Mercury applications. It is engineered to deliver the ECU feedback needed for accurate fuel control, emissions monitoring, and fault-code diagnosis.

For vehicles such as the Ford Taurus, Ford Mustang, and Ford Ranger, this upstream sensor is used in the exhaust stream to help the engine management system maintain proper air-fuel balance.

Key Features

• Heated oxygen sensor for faster operating temperature and signal response
• Specific-fit design for the listed application and mounting position
• 3-wire configuration with 20-gauge wiring
• Radiused polygon male connector for direct vehicle connection
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 8.39 in.; overall length: 11.93 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements for worldwide vehicle coverage. Part number 350-33014 is built for upstream use and is listed across multiple Ford, Lincoln, and Mercury models from 1986-1995, including Ford Taurus, Ford Mustang, Ford Probe, Ford Ranger, Lincoln Mark VII, and Mercury Sable. This part number is also referenced for select Mazda B2300 applications without California emissions certification.

This part cross-references Bosch 13275 and Denso 234-1001 for the same application.

What It Helps Address

• Check engine light or malfunction indicator light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust oxygen feedback
• Rough running or drivability issues tied to air-fuel mixture control
• Higher exhaust emissions from a failing upstream sensor
• Stored ECU fault codes linked to the affected sensor circuit

Installation Notes

Verify the sensor position before ordering, since this listing covers upstream front, upstream rear, upstream left, and upstream right applications depending on vehicle. Confirm connector style, thread size, and harness length against the original part. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation.

Fits 1992-1995 Ford Taurus, upstream rear and upstream front; 1991-1993 Ford Mustang, upstream right and upstream left; 1990-1992 Ford Probe, upstream; 1988-1992 Lincoln Mark VII, upstream right and upstream left; 1987-1991 Mercury Colony Park, upstream right and upstream left; 1987-1991 Mercury Grand Marquis, upstream right and upstream left; 1987-1990 Ford Thunderbird, upstream right and upstream left; 1988-1990 Lincoln Continental, upstream rear and upstream front; 1988-1990 Mercury Sable, upstream rear and upstream front; 1987-1989 Ford E-150 Econoline, upstream; 1987-1989 Ford E-250 Econoline, upstream; 1987-1989 Ford E-350 Econoline, upstream; 1987-1989 Ford Mustang, upstream; 1987-1989 Ford E-150 Econoline Club Wagon, upstream; 1987-1989 Ford E-250 Econoline Club Wagon, upstream; 1987-1989 Ford E-350 Econoline Club Wagon, upstream; 1987-1988 Ford Bronco II, upstream; 1987-1988 Ford Ranger, upstream; 1987-1988 Ford Thunderbird, upstream; 1987 Ford Aerostar, upstream; 1987 Ford Lincoln Continental, upstream right and upstream left; 1987 Ford Lincoln Mark VII, upstream right and upstream left; 1987 Mercury Lynx, upstream; 1987 Mercury Sable, upstream.

Quality Assurance

Walker Products has supplied engine management and oxygen sensor components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-33014 is manufactured for the specified application and position to provide the diagnostic feedback expected by the ECU.