Bosch 12112 Oxygen Sensor - Downstream or Upstream

Reliable Oxygen Sensor for Geo, Lexus, and Toyota Vehicles

The Bosch Engineered Oxygen Sensor 12112 is designed to provide accurate air-fuel mixture readings for improved engine performance and emissions control. This specific fit oxygen sensor is compatible with popular models such as the Toyota Camry, Corolla, Supra, and Lexus ES300, GS300, and SC300.

• Specific fit for Geo, Lexus, and Toyota models
• Standard replacement grade for reliable performance
• Non-heated narrow-band oxygen sensor type
• 17.6-inch wiring harness length with round male connector
• Flange mounting type with 18 mm thread diameter
• Metal housing with steel finish and 22 mm hex size
• Single wire and blade terminal for precise connection

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise sensor technology tailored to specific vehicle applications. The 12112 oxygen sensor is engineered to meet OEM specifications, ensuring compatibility and consistent performance in emission control systems. This line emphasizes durability and accurate sensor readings to maintain optimal engine efficiency and emissions compliance.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band, non-heated sensor type designed for specific fitment on select Geo, Lexus, and Toyota vehicles. The sensor includes a 17.6-inch wiring harness with a round male connector and a single blade terminal, facilitating a secure and reliable electrical connection. The sensor mounts via a flange with an 18 mm thread diameter and an overall length of 21.3 inches, including a 20.1-inch length from the sealing surface to the end of the connector. Constructed with a metal housing and steel finish, it offers durability under typical operating conditions. The 22 mm hex size allows for straightforward installation using standard tools.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for improved fuel efficiency
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce vehicle emissions by ensuring proper air-fuel mixture
• Prevents rough idling and engine performance issues caused by faulty sensors
• Maintains optimal engine operation in Toyota Camry, Lexus GS300, and other compatible models

Installation Notes and Tips

When installing the Bosch Engineered Oxygen Sensor 12112, ensure the vehicle is cooled down to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s flange mounting and thread size match the vehicle’s exhaust port. The wiring harness length of 17.6 inches provides adequate reach for proper connection without strain. Confirm the male round connector aligns correctly with the vehicle’s wiring harness to avoid connection issues.

Quality Assurance and Warranty

Bosch Engineered Oxygen Sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. This oxygen sensor is a standard replacement part designed to meet OEM specifications. While specific warranty details are not provided here, Bosch products typically come with manufacturer-backed warranties to protect against defects in materials and workmanship.