Bosch 16157 Oxygen Sensor - Upstream or Upstream Right

Bosch Wideband OE Oxygen Sensor

Bosch 16157 is an Actual OE Oxygen Sensor built as a wideband air-fuel sensor for precise mixture feedback to the ECU. It is a specific-fit, heated replacement for select Ford Transit, Bronco Sport, and Escape applications, including upstream right and upstream locations.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement across the full lambda range
• Heated design with optimized heater control for faster sensor response
• Specific-fit replacement with 5-wire harness and included wiring harness
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Oblong male connector, blade terminals, and 6 terminal quantity
• Robust metal housing for OE-style durability in high-heat exhaust locations
• Part number 16157 for direct catalog lookup and service matching

Product Details

Bosch 16157 uses Bosch wideband oxygen sensor technology to provide detailed feedback for modern engine management systems. Bosch pioneered the planar pump-cell wideband design that became the standard for current low-emission control strategies, and this sensor reflects that OE development history. For drivers and technicians servicing a Ford Transit-150, Transit-250, Transit-350, Transit-350 HD, Bronco Sport, or Escape, the sensor supports accurate fuel control where the engine needs fast, stable upstream readings. This part cross-references LK4Z9F472D and LX6Z9F472H for the same application.

Vehicle Fitment

• Fits 2020-2025 Ford Transit-150, Upstream Right
• Fits 2020-2025 Ford Transit-250, Upstream Right
• Fits 2020-2025 Ford Transit-350, Upstream Right
• Fits 2020-2021 Ford Transit-350 HD, Upstream Right
• Fits 2023-2025 Ford Transit-350 HD, Upstream Right
• Fits 2021-2024 Ford Bronco Sport, Upstream
• Fits 2022 Ford Escape, Upstream

What It Helps Address

• Check engine lights related to oxygen sensor performance
• Incorrect air-fuel ratio readings at the upstream sensor location
• Rough idle, hesitation, or inconsistent fuel control caused by degraded sensor feedback
• Reduced fuel economy from inaccurate exhaust oxygen measurement
• Emissions test failures tied to faulty wideband sensor operation

Installation Notes

Verify the connector shape, terminal count, thread size, and sensor position before installation. Bosch 16157 is a threaded, specific-fit sensor with an included wiring harness, so the existing exhaust bung and harness routing should be checked for proper alignment on the vehicle. Confirm the application by model year and position for Ford Transit-150, Transit-250, Transit-350, Transit-350 HD, Bronco Sport, or Escape before replacement.

Quality Assurance

Bosch backs this Actual OE Oxygen Sensor with more than five decades of OE development experience. The sensor is built with fast light-off characteristics, controlled heater performance, and durable ceramic construction to support reliable operation through thermal cycling and rapid load changes.