Carter M3643 Mechanical Fuel Pump

Reliable Mechanical Fuel Pump for Buick, Jeep, Oldsmobile, and Pontiac

The Carter M3643 mechanical fuel pump is designed to provide consistent fuel delivery for select Buick, Jeep, Oldsmobile, and Pontiac models. Engineered with threaded inlet and outlet fittings, this pump ensures a secure connection and steady fuel flow for vehicles like the Jeep CJ5 and Buick LeSabre.

• Mechanical fuel pump with threaded inlet and outlet
• Includes gasket or seal for proper installation
• Single outlet with 1/8-27 NPSF thread size
• Flow rating between 28 minimum and pressure range of 4 to 5.5 psi
• Compatible with Buick Cutlass, LeSabre, Skylark, Pontiac Tempest, and Jeep CJ5
• Mounting hardware not included

Technical Details and Specifications

The Carter M3643 mechanical fuel pump operates within a pressure range of 4 to 5.5 psi, delivering a minimum flow rating of 28 gallons per hour. Its inlet and outlet are both threaded, with the outlet fitting thread size specified as 1/8-27 NPSF, allowing for a secure and leak-resistant connection. This pump features a single outlet design and comes with a gasket or seal to ensure a proper fit and prevent fuel leaks during installation. Note that mounting hardware is not included, so existing hardware or separate purchase may be necessary.

Compatible Vehicles and Applications

This mechanical fuel pump is compatible with a range of classic and vintage vehicles, including Buick Cutlass, LeSabre, and Skylark models, Pontiac Tempest, and Jeep CJ5. The Carter M3643 is ideal for restoring or maintaining fuel delivery systems in these vehicles, ensuring reliable engine performance.

• Restores proper fuel pressure and flow in older Buick and Pontiac models
• Replaces worn or leaking fuel pumps in Jeep CJ5
• Addresses fuel delivery issues such as engine hesitation or stalling
• Prevents fuel leaks with included gasket or seal
• Maintains consistent fuel pressure for smooth engine operation

Installation Notes and Tips

When installing the Carter M3643 mechanical fuel pump, ensure the gasket or seal is properly seated to prevent leaks. Since mounting hardware is not included, verify that existing bolts and brackets are in good condition or obtain replacements as needed. Threaded inlet and outlet fittings require careful tightening to avoid damage or leaks. It is recommended to inspect fuel lines and connections during installation to maintain overall fuel system integrity.

Quality Assurance and Warranty

Carter mechanical fuel pumps are manufactured to meet OEM specifications for durability and performance. The M3643 part number undergoes quality control testing to ensure consistent fuel delivery and pressure regulation. While specific warranty details are not provided, Carter products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or authorized sources for exact warranty terms.