Walker 250-54107 Oxygen Sensor - Upstream

Walker Products OE Oxygen Sensor 250-54107

Walker Products OE 250-54107 is a heated upstream oxygen sensor built for specific applications and OE-style fitment. It is engineered to provide the ECU with the diagnostic feedback needed for proper fuel control and emissions monitoring on supported Toyota and Scion vehicles.

Compatible With 2004-2010 Toyota Camry, Toyota Solara, Scion tC, and Scion xB upstream positions, this oxygen sensor is a direct-fit replacement for Bank 1 Sensor 1 applications where listed. The Walker Products OE line focuses on application-specific sensors matched to the vehicle’s mounting position and connector requirements.

Key Features

• Part number: 250-54107
• Heated oxygen sensor for upstream placement
• Specific fit design for OE-style replacement
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 18.23 in.
• Overall length: 21.77 in.

Walker Products OE Line

Walker Products OE is the brand line for application-specific engine management and oxygen/air-fuel sensors. Each sensor is built for a defined vehicle position so the ECU receives the correct signal for emissions and fuel-system control. The 250-54107 follows that OE replacement approach for upstream sensor locations on listed Toyota and Scion models.

Detailed Description

This Walker Products oxygen sensor is intended for upstream use where the vehicle calls for Bank 1 Sensor 1 or front oxygen sensor service. It is listed for 2004-2006 Toyota Camry, 2005-2007 Toyota Solara, 2007-2008 Toyota Camry, 2008-2010 Scion xB, and 2009-2010 Scion tC applications, including emissions-specific Camry configurations noted in the fitment data. If your vehicle has a fault code related to the upstream sensor, this part number 250-54107 provides a direct replacement path for the specified applications.

This part cross-references no additional part numbers in the provided data.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Poor fuel economy caused by incorrect air-fuel feedback
• Rough engine operation tied to sensor signal issues
• Elevated exhaust emissions from a failing sensor
• Diagnostic trouble codes stored in the ECU for sensor performance

Installation Notes and Tips

Confirm the vehicle’s exact year, model, emissions package, and sensor position before ordering. This is a specific-fit upstream oxygen sensor, so connector style, thread size, and harness length should be matched to the original unit. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation, since damaged wiring can shorten sensor life and affect readings.

Quality Assurance

Walker Products has produced engine management and fuel-system components since 1946 and operates as an ISO 9001/TS 16949 certified company. The 250-54107 is manufactured as an OE-style replacement sensor for the listed applications and positions.