Dorman 645-710 Oxygen Sensor Connector

OE-Style Oxygen Sensor Connector

This Dorman oxygen sensor connector is built to match the appearance and function of the original hardware on specified Ford, Lincoln, and Mercury applications. The Dorman 645-710 uses quality materials for reliable electrical connection and long-term durability in underhood conditions.

• OE-style oxygen sensor connector for specified applications
• 4-way connector with leads for direct repair use
• 8.66 in. wiring harness length
• 20-gauge wire with female blade terminals
• Tin brass terminal material with tin plating for conductivity
• Fits 1995-2011 Ford Ranger, 1995-1997 Ford Explorer, and other listed Ford, Lincoln, and Mercury vehicles

Detailed Product Overview

The Dorman 645-710 oxygen sensor connector is designed for repair work where the original connector is damaged, heat-affected, or no longer making a secure electrical connection. It follows the original hardware layout for specified Ford Ranger, Ford F-150, Ford F-250, Ford Crown Victoria, Lincoln Town Car, Mercury Grand Marquis, Lincoln Mark VIII, Ford Explorer, Ford F-250 HD, and Ford Thunderbird applications. This part cross-references Standard Ignition S-631 for the same application.

Built with a 4-wire configuration, blade-style female terminals, and tin brass terminal material, this connector supports a stable signal path at the oxygen sensor connection point. The 8.66-inch harness length and 20-gauge wire help make it suitable for replacing a worn connector section without changing the surrounding harness layout. The Dorman 645-710 is a practical choice for restoring a damaged oxygen sensor connector on Ford Ranger and related OE-style repair applications.

Common Problems This Part Can Address

• Broken or heat-damaged oxygen sensor connector housing
• Intermittent sensor signal caused by loose terminal contact
• Corrosion at the connector terminals
• Wiring damage near the oxygen sensor lead
• Failed emissions-related electrical connection at the sensor plug

Installation Notes and Tips

Verify the connector style, wire count, and terminal layout against the original part before installation. Match the 4-way w/ leads configuration to the vehicle harness and confirm the application by year, make, and model. For best results, inspect nearby wiring for heat damage or corrosion before splicing or connecting the replacement harness.

Quality Assurance

Dorman manufactures this connector to match original appearance and function on specified applications, using quality materials selected for dependable performance and durability.