Bosch 15740 Oxygen Sensor

Bosch Universal O2 Sensor 15740

Bosch Universal Oxygen Sensor 15740 is a narrow-band heated O2 sensor built for OE-style air-fuel feedback and universal installation. It uses Bosch zirconia ceramic sensing technology with a SmartLink Posi-Lock connector system for fast adaptation to existing harnesses.

Key Features

• Bosch SmartLink universal oxygen sensor with OE-spec base sensor design
• Narrow-band heated sensor for accurate exhaust feedback
• Posi-Lock connector system for secure, high-temperature and weather-resistant electrical connections
• No soldering, crimping, or specialty tools required for connector adaptation
• Extended lead length for vehicles with damaged or shortened wiring
• Reusable connector system if harness adjustments are needed
• Threaded mounting with 18 mm thread size and 22 mm hex size
• 4-wire harness with included wiring harness

Product Details

Part number 15740 is part of Bosch’s Universal Oxygen Sensor line, which combines a standard replacement sensor body with a flexible connector solution for broader vehicle coverage. The sensor is engineered for dependable air-fuel-ratio signal output and consistent heater performance, making it a practical replacement for downstream and upstream applications where the original connector is damaged, shortened, or difficult to match. Compatible With many Toyota Camry, Lexus GX460, and Nissan Pathfinder applications, this Bosch 15740 sensor is also listed across a wide range of Volvo, Jaguar, Mazda, and Chevrolet platforms.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Check engine light caused by oxygen sensor signal faults
• Rich or lean fuel trim conditions related to aging O2 sensor output
• Slow heater response or heater circuit-related sensor issues
• Damaged, shortened, or mismatched factory sensor wiring
• Connector corrosion or poor electrical contact at the harness connection

Installation Notes and Tips

• Verify the sensor position before ordering; this listing includes multiple upstream and downstream applications.
• Match the vehicle’s connector and harness routing before adapting the universal lead.
• Use the threaded mounting and correct 18 mm thread specification during installation.
• Follow the vehicle service manual for torque, routing, and connector placement.
• Confirm the exact year, make, model, and emissions configuration for fitment-sensitive applications such as California emissions or production-date splits.

Quality Assurance

Bosch builds this universal oxygen sensor with the same zirconia element and heater design used in OE applications. The SmartLink connector system is designed for secure electrical contact and repeatable serviceability, supporting professional-grade installation across a broad range of vehicles.