Walker 250-241299 Oxygen Sensor - Downstream Rear or Downstream Right

Overview of Walker OE Base Sensor Oxygen Sensor

The Walker OE Base Sensor 250-241299 is a heated narrow-band oxygen sensor designed specifically for Toyota Highlander models. This oxygen sensor helps maintain optimal engine performance and emission control by accurately monitoring exhaust gases.

• Heated narrow-band oxygen sensor for precise air-fuel ratio monitoring
• Specific fit for Toyota Highlander ensuring proper compatibility
• Spade terminal type with 4 male terminals and a female square connector
• Thread size M18 - 1.5 with a 22mm wrench size for installation
• Includes 4 wires for reliable electrical connection

Detailed Product Description

The Walker OE Base Sensor 250-241299 is engineered as a specific fit oxygen sensor for Toyota Highlander vehicles. Featuring a heated design, this narrow-band sensor quickly reaches operating temperature to provide accurate feedback to the engine control unit (ECU). The sensor’s spade terminal type with four male terminals and a female square connector ensures a secure and stable electrical connection. Its thread size of M18 - 1.5 and 22mm wrench size allow for straightforward installation using standard tools.

Walker’s OE Base Sensor product line focuses on delivering sensors that meet original equipment specifications, providing reliable performance and durability. This line is designed to match the fit, form, and function of factory-installed sensors, making it a suitable replacement part for emission control systems.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve rough idling caused by faulty oxygen sensors
• Reduces engine hesitation and improves fuel efficiency
• Assists in passing emissions tests by maintaining proper exhaust readings
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker OE Base Sensor 250-241299 on a Toyota Highlander, ensure the engine is cool before removal to avoid burns. Use a 22mm wrench to remove the old sensor and install the new one with the M18 - 1.5 thread size. Confirm the connector’s square female shape matches the vehicle harness and that the four spade terminals align correctly. Avoid over-tightening to prevent damage to the sensor or exhaust manifold.

Quality Assurance and Warranty

Walker OE Base Sensors are manufactured to meet or exceed OEM standards for durability and performance. While specific warranty details for part number 250-241299 are not provided here, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain the emission control integrity of your Toyota Highlander.