Bosch 12031 Oxygen Sensor - Downstream or Upstream

Reliable Oxygen Sensor for Emission Control Systems

The Bosch Universal Oxygen Sensor 12031 is designed to provide accurate air-fuel mixture readings for a variety of vehicles. This narrow-band, non-heated oxygen sensor is compatible with multiple makes and models, including Toyota Camry, Lexus ES300, and Chevrolet Nova, ensuring dependable emission control performance.

• Universal fit with threaded terminal type for versatile installation
• 2.8-inch wiring harness length with one wire and round connector shape
• Standard replacement grade with flange mounting type and metal housing
• Non-heated narrow-band sensor with 18 mm thread diameter and 22 mm hex size
• Compatible with Chevrolet, Geo, Lexus, and Toyota models such as 4Runner, Camry, Corolla, and Supra

About the Bosch Universal Oxygen Sensor Line

The Bosch Universal Oxygen Sensor product line offers standard replacement sensors designed for broad compatibility across various vehicle makes and models. The Universal Oxygen Sensor 12031 provides a reliable solution for emission control systems requiring a narrow-band, non-heated sensor with a flange mounting style. This line focuses on delivering consistent sensor performance with durable metal housings and precise thread specifications.

Product Details and Specifications

This Bosch oxygen sensor features a 6.5-inch overall length and a 5.3-inch length from the sealing surface to the end of the connector, allowing for flexible installation in tight engine compartments. The sensor includes a single female terminal and a male-female connector, with a round connector shape to ensure secure electrical connections. The sensor is constructed with a metal housing finished in steel, providing durability under typical operating conditions. The wiring harness is included, measuring 2.8 inches in length, and the sensor is designed without heating elements, making it suitable for applications that do not require heated sensors.

Compatible Vehicles and Common Applications

• Emission control sensor replacement for Toyota Camry, Corolla, and Supra
• Oxygen sensor upgrade for Lexus ES300, GS300, and SC300 models
• Replacement sensor for Chevrolet Nova, Pickup, and Prizm vehicles
• Suitable for Geo models including Starlet and Metro
• Fits Toyota 4Runner, Land Cruiser, MR2, and Tercel for emission monitoring

Installation Notes and Tips

When installing the Bosch 12031 oxygen sensor, ensure the flange mounting type aligns with the vehicle’s exhaust port. Use a 22 mm hex socket for proper tightening to the specified torque. Verify the wiring harness length and connector type match the vehicle’s existing sensor connections. Since this is a non-heated sensor, confirm compatibility with your vehicle’s emission system requirements before installation.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet OEM standards for emission control components. The Universal Oxygen Sensor 12031 is built with durable metal housing and precise thread dimensions to ensure a secure fit and reliable operation. While specific warranty details are not provided here, Bosch typically offers limited warranties on their emission control sensors to cover manufacturing defects.