Bosch 12114 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Geo, Lexus, and Toyota Vehicles

The Bosch Engineered Oxygen Sensor 12114 is designed to provide accurate air-fuel mixture readings for improved engine performance and emissions control. Specifically engineered for select Geo, Lexus, and Toyota models, this oxygen sensor ensures precise monitoring of exhaust gases.

• Wiring harness length: 11.1 inches for optimal fitment
• Blade terminal type with one terminal for secure electrical connection
• Specific fitment for Geo Camry, Lexus ES300, Toyota Celica, Corolla, and Prizm
• Standard replacement grade for reliable performance
• Round male connector with one male terminal
• Flange mounting type with 22 mm hex size for easy installation
• Metal housing with steel finish for durability
• Narrow-band non-heated oxygen sensor type
• Thread diameter and size: 18 mm
• Wiring harness included for direct replacement

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise sensor technology tailored to specific vehicle applications. This part number 12114 is part of that line, offering a narrow-band, non-heated oxygen sensor designed to meet OEM specifications for emission control systems in Geo, Lexus, and Toyota vehicles. The sensors are built with quality metal housings and reliable connectors to maintain consistent performance over time.

Product Details and Specifications

This oxygen sensor features a wiring harness length of 11.1 inches and an overall length of 14.8 inches, providing the correct reach for proper installation. The blade terminal type and round male connector ensure a secure and stable electrical connection. The sensor is a narrow-band, non-heated type, suitable for vehicles that do not require heated sensors. Its flange mounting type and 22 mm hex size allow for straightforward replacement using standard tools. The metal housing with a steel finish offers resistance to heat and corrosion, supporting long-term durability.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Helps reduce harmful emissions by ensuring proper exhaust monitoring
• Resolves check engine light triggers related to oxygen sensor faults
• Improves engine performance by maintaining optimal combustion
• Prevents rough idling and poor acceleration caused by faulty sensors

Installation Notes and Tips

When installing the Bosch Engineered Oxygen Sensor 12114, ensure the vehicle is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match your vehicle’s specifications. This sensor is a direct replacement for specific Geo, Lexus, and Toyota models, so confirm compatibility before installation. Avoid over-tightening the sensor to prevent damage to the threads.

Quality Assurance and Warranty

Bosch Engineered Oxygen Sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. This part number 12114 is a standard replacement grade sensor designed to meet OEM requirements. While specific warranty details are not provided here, Bosch typically offers limited warranties on their sensors to cover manufacturing defects.