Bosch 12051 Oxygen Sensor - Upstream

Overview of Bosch Engineered Oxygen Sensor 12051

The Bosch Engineered Oxygen Sensor part number 12051 is designed for specific fitment in select Chevrolet and Toyota models. This narrow-band, non-heated oxygen sensor provides reliable emission control performance with a precise flange mounting type and a durable metal housing.

• Specific fit for Chevrolet and Toyota vehicles including 4Runner, Camry, Corolla, Supra, and more
• Standard replacement grade with a 17.6-inch wiring harness length
• Blade terminal type with a single wire and male connector
• Flange mounting type with 18 mm thread diameter and 22 mm hex size
• Non-heated narrow-band sensor with metal housing and steel finish

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise emission control components engineered to meet original equipment specifications. This product line emphasizes compatibility and durability, ensuring that sensors like the 12051 maintain accurate air-fuel mixture readings for optimal engine performance and emissions compliance in specific vehicle applications.

Detailed Product Description

The Bosch Engineered Oxygen Sensor 12051 is a narrow-band, non-heated oxygen sensor designed for specific fitment in Chevrolet and Toyota models such as the Camry, 4Runner, Supra, and Corolla. It features a flange mounting type with an 18 mm thread diameter and a 22 mm hex size for secure installation. The sensor includes a 17.6-inch wiring harness with a single blade terminal and a round male connector, facilitating straightforward electrical connections. Constructed with a metal housing and finished in steel, this sensor offers durability and reliable performance. The overall length of 21.3 inches and a wire length of 20.1 inches from sealing surface to connector end provide ample reach for proper installation.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Chevrolet and Toyota vehicles
• Helps resolve engine performance issues related to incorrect air-fuel mixture readings
• Reduces emissions by ensuring accurate oxygen level detection
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by maintaining proper combustion control

Installation Notes and Tips

When installing the Bosch Engineered Oxygen Sensor 12051, ensure the vehicle is compatible with this specific sensor model. Use a 22 mm oxygen sensor socket for removal and installation. The flange mounting type requires proper torque to avoid leaks or damage. Verify the wiring harness length and connector type match the vehicle’s original sensor to ensure a secure electrical connection. Since this is a non-heated sensor, confirm the vehicle’s system does not require a heated oxygen sensor for proper operation.

Quality Assurance and Warranty

Bosch Engineered Oxygen Sensors are manufactured to meet strict quality standards and original equipment specifications. This part is a standard replacement grade sensor designed for reliable performance and durability. While specific warranty details are not provided here, Bosch typically offers limited warranties on their emission control components. It is recommended to consult the product documentation or supplier for exact warranty terms.