Dorman 285-5500 Mechanical Fuel Pump

Dorman 285-5500 Mechanical Fuel Pump

Dorman 285-5500 is a mechanical fuel pump built to match the original fit and function on specified applications. It uses an aluminum housing, male connections, and flare fitting inlet and outlet ports for a direct-style replacement on select fuel delivery systems.

For buyers searching for a mechanical fuel pump for Chevrolet and GMC applications, this part number 285-5500 offers a straightforward OE-style service replacement with the correct mounting and port layout.

Key Features

• Mechanical fuel pump for air and fuel delivery systems
• Aluminum housing for durable construction
• Flare fitting inlet and outlet connections
• Male connection type with two mounting holes
• Maximum pressure rating of 85
• Gasket included for installation sealing
• Fits applications that use a 10 inlet outside diameter and 7.3 mm outlet diameter

Detailed Description

Dorman 285-5500 is engineered as a direct replacement mechanical fuel pump for specified vehicles that use a traditional cam-driven fuel supply setup. The pump is built to align with original equipment fit and function, helping maintain proper fuel delivery to the carburetor or fuel system on the intended Chevrolet and GMC applications. The aluminum housing supports long-term service, while the flare fitting inlet and outlet design helps maintain the correct connection style for the vehicle’s fuel lines. Part number 285-5500 is also cross-referenced to 25502470 for the same application.

What This Fuel Pump Helps Address

• Hard starting caused by weak fuel delivery
• Engine stalling from inconsistent fuel supply
• Fuel starvation under normal driving conditions
• Low fuel pressure in mechanical pump systems
• Fuel system service needs on select Chevrolet and GMC vehicles

Installation Notes and Tips

Verify the inlet and outlet style, mounting hole count, and pressure requirements before installation. Use the included gasket to help seal the pump-to-engine mounting surface, and confirm that the fuel lines match the flare fitting connection type. Because this is a mechanical fuel pump, proper alignment with the engine’s fuel pump drive is important during replacement. Confirm vehicle-specific application details for Chevrolet and GMC models before ordering.

Quality Assurance

Dorman designs this fuel pump to match original fit and function on specified applications and manufactures it from quality materials for reliable service and durability. Part number 285-5500 is built for regular-grade replacement use in the intended fuel delivery system.