Bosch 16643 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Ford and Lincoln Vehicles

The Bosch Actual OE Oxygen Sensor 16643 is designed specifically for select Ford and Lincoln models, including the Escape, Explorer, Focus, Fusion, MKC, MKT, MKZ, and Taurus. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance.

• Specific fit for Ford and Lincoln vehicles
• Heated narrow-band oxygen sensor type
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Includes a 22.1-inch wiring harness with 4 wires and a square male connector
• Durable metal housing with steel finish
• Standard replacement grade for reliable performance

About the Bosch Actual OE Oxygen Sensor Line

The Actual OE Oxygen Sensor line by Bosch offers direct replacement sensors engineered to meet original equipment specifications. This ensures compatibility and performance consistency for emission control systems. The 16643 part number belongs to this line, providing a precise fit and function for specific Ford and Lincoln models, maintaining factory-level sensor operation.

Product Details and Specifications

This oxygen sensor features a narrow-band heated design, which helps the engine control module accurately monitor and adjust the air-fuel mixture. The sensor has a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for installation using standard tools. The wiring harness length is 22.1 inches, with a total overall length of 25.5 inches, including a 4-wire configuration and a square-shaped male connector. The sensor housing is made of metal with a steel finish, weighing approximately 0.24 pounds. The connector terminals are female, designed to mate securely with the male connector on the wiring harness.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for improved fuel efficiency
• Resolves check engine light codes related to oxygen sensor failure
• Helps reduce vehicle emissions to meet regulatory standards
• Improves engine performance and drivability
• Prevents rough idling and poor acceleration caused by faulty sensors

Installation Notes and Tips

Installation requires a 22 mm oxygen sensor socket or wrench. Ensure the engine is cool before removal to avoid injury. The threaded mounting type allows for straightforward replacement without additional brackets. Verify connector compatibility with the vehicle’s wiring harness before installation. Since this sensor is a specific fit for Ford and Lincoln models, confirm vehicle compatibility using the part number 16643 to avoid installation issues.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable operation and durability. The Actual OE Oxygen Sensor 16643 is a standard replacement grade part designed to match original equipment performance. While specific warranty details may vary, Bosch typically offers coverage against manufacturing defects to provide confidence in product reliability.