Walker 250-23133 Oxygen Sensor - Upstream Front, Upstream Rear or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-23133

The Walker Products OE Oxygen Sensor 250-23133 is designed specifically for select INFINITI and Nissan vehicles, including the I30, Maxima, Pathfinder, and QX4 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for INFINITI and Nissan models
• 24.33-inch wiring harness length for precise installation
• 20 gauge wire for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 27.87 inches for proper fitment

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-23133) is engineered to meet the exact specifications of your vehicle’s original equipment. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings. The sensor includes a 24.33-inch wiring harness with 20 gauge wires, ensuring durability and consistent electrical performance. Its radiused polygon male connector and threaded mounting type with an 18.0 mm thread diameter allow for a secure and precise fit in the exhaust system. The overall length of 27.87 inches accommodates the specific routing requirements of compatible INFINITI and Nissan models.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering direct-fit emission control components that meet or exceed original equipment standards. This oxygen sensor is part of that line, providing a reliable replacement option that maintains factory-level performance and emissions compliance for your INFINITI I30, Nissan Maxima, Pathfinder, or QX4.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for improved fuel efficiency
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Prevents rough idling and engine hesitation caused by faulty sensors
• Supports optimal engine performance and drivability

Installation Notes and Tips

Installation requires removal of the old oxygen sensor and threading the Walker 250-23133 sensor into the exhaust manifold or pipe. The 18.0 mm threaded mounting and radiused polygon male connector ensure a secure fit. Verify wiring harness length and connector compatibility with your vehicle’s harness before installation. Use anti-seize compound on the threads to facilitate future removal, but avoid contaminating the sensor tip.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.