Walker 250-54034 Oxygen Sensor - Upstream

Walker OE Oxygen Sensor for Suzuki Fitment

Walker Products OE 250-54034 is a heated oxygen sensor built for specific vehicle applications and exact mounting positions. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring on select Suzuki Grand Vitara and Suzuki SX4 models.

• Heated oxygen sensor for faster operating response
• Specific fit design for the correct application and position
• 4-wire configuration with female radiused polygon connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 13.31 in.; overall length: 16.85 in.
• Wire gauge: 20

Walker Products OE Line Details

Walker Products OE focuses on original-equipment-style replacement sensors for vehicles worldwide. The line is built around application-specific fitment, so the sensor, connector, and harness layout match the vehicle’s required position and diagnostic feedback needs. Part number 250-54034 follows that OE replacement approach for upstream oxygen sensor service on supported Suzuki models.

Fitment and Application

Compatible with upstream oxygen sensor locations on select Suzuki vehicles. Fits 2009-2013 Suzuki Grand Vitara, upstream. Fits 2007-2009 Suzuki SX4, upstream. This part number 250-54034 is listed for Bank 1 Sensor 1 and front oxygen sensor applications on the supported vehicles.

• Fits 2009-2013 Suzuki Grand Vitara, upstream
• Fits 2007-2009 Suzuki SX4, upstream

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel readings
• Higher exhaust emissions from a failing upstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Before replacement, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion. Confirm the threaded mounting location and connector style match the original part, and verify the vehicle’s upstream position before installation. For best results, clear diagnostic trouble codes after repair and confirm the ECU returns to normal sensor feedback.

Quality Assurance

Walker Products manufactures engine management sensors under ISO 9001 and TS 16949 quality systems. Since 1946, the brand has supplied oxygen and air-fuel sensors for OE-style replacement use across a wide range of vehicles.