Dorman 645-710 Oxygen Sensor Connector

Reliable Oxygen Sensor Connector for Ford, Lincoln, and Mercury Vehicles

The Dorman 645-710 oxygen sensor connector is designed to provide a secure and durable electrical connection for oxygen sensors in select Ford, Lincoln, and Mercury models. Engineered with quality materials and precise specifications, this connector ensures consistent sensor performance and vehicle emissions compliance.

• Wiring harness length of 8.66 inches for optimal fitment
• 20-gauge wire measurement for reliable electrical conductivity
• Four-wire configuration to support sensor signal and power
• Female blade terminal type made from tin-plated brass for corrosion resistance
• Includes one complete oxygen sensor harness for direct replacement

Technical Details and Compatibility

This oxygen sensor connector features a wiring harness length of 8.66 inches, providing sufficient reach for installation in vehicles such as the Ford F-150, Explorer, Ranger, and F-250 series, as well as Lincoln Town Car, Mark VIII, and Mercury Grand Marquis models. The 20-gauge wires ensure stable electrical flow, while the four-wire setup supports the necessary sensor functions. The female blade terminals are constructed from tin-plated brass, offering durability and resistance to corrosion in harsh engine environments. The Dorman 645-710 part number corresponds specifically to this oxygen sensor connector harness, making it a precise replacement for original equipment connectors in the listed vehicles.

Common Applications and Problem Resolution

• Restores proper oxygen sensor connection to prevent engine performance issues
• Eliminates faulty or damaged wiring harnesses causing sensor signal loss
• Addresses check engine light triggers related to oxygen sensor circuit faults
• Helps maintain accurate fuel mixture readings for emissions control
• Prevents intermittent sensor disconnections that affect drivability

Installation Notes and Tips

When installing the Dorman 645-710 oxygen sensor connector, ensure the vehicle is turned off and cooled down to avoid injury. Disconnect the battery before removing the old connector to prevent electrical shorts. Match the four-wire harness carefully to the vehicle’s oxygen sensor wiring, verifying the female blade terminals align correctly with the sensor pins. The 8.66-inch harness length allows for straightforward routing without excessive tension. Use dielectric grease on terminals to enhance corrosion resistance and ensure a secure connection.

Quality Assurance and Warranty

Dorman manufactures this oxygen sensor connector to meet or exceed OEM specifications for fit, form, and function. The tin-plated brass terminals provide long-lasting corrosion resistance, contributing to reliable sensor operation. This product is backed by Dorman’s limited warranty, covering defects in materials and workmanship under normal use conditions.