GMB 520-8090 Mechanical Fuel Pump

GMB 520-8090 Mechanical Fuel Pump

The GMB 520-8090 mechanical fuel pump is built for classic Chevrolet and GMC fuel systems that need an OEM-standard replacement. Manufactured to meet or exceed OEM specifications, it supports dependable fuel delivery for carbureted applications across a wide range of 1967-1973 trucks, vans, and passenger cars.

Key Features

• OEM Standard item grade for factory-style fit and function
• Manufactured to meet or exceed OEM specifications
• No gasket required
• Strainer not required
• Direct replacement for select Chevrolet and GMC mechanical fuel pump applications
• Part number: 520-8090

Detailed Description

GMB 520-8090 is a mechanical fuel pump for classic Air and Fuel Delivery service, engineered for vehicles that rely on a cam-driven fuel supply. It is a practical replacement for applications such as Chevrolet C10 Suburban, Impala, Blazer, El Camino, Nova, Camaro, Corvette, Bel Air, Caprice, and GMC Jimmy, G15/G1500 Van, and G25/G2500 Van. The 520-8090 follows OEM-standard requirements to support consistent fuel delivery in original-style systems.

This part cross-references Airtex Fuel Pumps 40503 and Carter M4513 for the same application.

What It Is Used For

• Restoring fuel delivery on a worn mechanical fuel pump
• Addressing hard-start or no-start conditions related to fuel supply
• Correcting fuel starvation under normal engine operation
• Replacing a pump that no longer maintains steady carburetor feed
• Servicing classic Chevrolet and GMC vehicles with original-style fuel systems

Installation Notes and Tips

Verify engine and fuel system configuration before installation. This pump uses no gasket required and does not require a strainer, so confirm the mounting surface and fuel line routing are clean and in good condition. For best results, inspect the fuel lines, filter, and carburetor inlet for contamination or wear before installing the 520-8090.

Quality Assurance

GMB manufactures this pump to meet or exceed OEM specifications and supplies it as an OEM-standard replacement part. That makes the 520-8090 a solid choice for maintaining factory-style performance in compatible Chevrolet and GMC applications.