built to meet or exceed oem fit and reliability and 100% factory tested and approved. ideal for vehicles with low pump pressure between 4 to 6 psi less susceptible to contaminates because its located outside the fuel tank in-line pumps are driven by the camshaft, which effectively transfers fuel from the tank to the carburetor maximum pressure - 7.3. maximum flow rating - 40 gph. inlet fitting thread size - 1/4-18 npsf. outlet fitting thread size - 1/4-18 npsf Included components: Carter M4891 Mechanical Fuel Pump Fit type: Vehicle Specific Fit With over 100 years of OE experience, Carter Fuel Systems delivers premium performance in fuel delivery technology. Carter has coverage for domestic, import, diesel, marine, off-road, HD, farm, and agricultural fuel pump applications. We design and manufacture our fuel pumps to deliver quiet operations, durability, resistance to contamination, and easy installation.