Dorman 667-445 Turbocharger Boost Pressure Relief Valve

Dorman 667-445 Turbo Boost Relief Valve

Dorman 667-445 is an electromechanical turbocharger boost pressure relief valve for turbocharged Ford and Lincoln applications. It regulates boost pressure from the turbocharger to the intake manifold, supporting stable engine response and proper boost control on vehicles such as the Ford Escape, Explorer, Edge, Mustang, Ranger, and Lincoln Aviator.

Key Features

• Electromechanical turbocharger boost pressure relief valve
• Standard replacement design for OE-style service
• Black plastic housing
• Compact 2.5 in. length
• Single 0.75 in. mounting hole and one port
• Cross-reference: Standard Ignition TBV1009

Detailed Description

This Dorman turbocharger boost pressure relief valve, part number 667-445, is built to control and optimize boost pressure between the turbocharger and intake manifold. It is a direct-fit service part for a wide range of Ford and Lincoln turbocharged vehicles, including the Ford Escape, Explorer, Bronco Sport, Edge, Mustang, Ranger, Fusion, GT, and Lincoln Corsair, Aviator, Nautilus, Continental, MKZ, MKC, and MKX. If you are replacing a worn or malfunctioning boost pressure relief valve on a Ford Explorer or Lincoln Aviator, 667-445 provides a standard replacement solution for the original application.

What It Helps Address

• Inconsistent turbo boost pressure
• Boost control faults related to the relief valve
• Driveability issues tied to improper intake manifold pressure regulation
• Loss of boost response on turbocharged Ford and Lincoln models
• Replacement needs for a damaged or aging electromechanical valve

Installation Notes and Tips

Verify the mounting hole diameter, port layout, and vehicle application before installation. This valve uses a black plastic body with a 2.5 in. length and a single mounting hole configuration. Confirm the original part number and vehicle match for Ford Escape, Explorer, Edge, Mustang, Ranger, Fusion, GT, and Lincoln Corsair, Aviator, Nautilus, Continental, MKZ, MKC, or MKX applications. Part number 667-445 is also referenced by OE number CJ5Z9U465A.

Quality Assurance

Dorman supplies standard replacement components for service and repair applications, with this valve engineered to match the specified turbo boost control function for the listed vehicles.