Oil Pump Primer Ford 260-351W 1/4in Hex

The Oil Pump Primer Ford 260-351W 1/4in Hex is an essential pre-oiling tool designed for engine builders and mechanics performing complete engine assembly or rebuilds on Ford 260, 289, and 351W V8 engines. Before firing a freshly assembled or freshly rebuilt engine, proper oil circulation through the pump, galleries, and bearing surfaces is critical—this primer eliminates dry-start conditions that can cause catastrophic bearing damage within seconds of ignition. Whether you're restoring a classic Bronco, F-series truck, or performance muscle car, this tool ensures your oil system is fully charged before the first crank.

This PROFORM primer features a 1/4-inch hex drive, which allows it to mate directly with your engine's oil pump shaft—a standard interface on Ford small-block and mid-block platforms. The tool accepts any quarter-inch hex bit or ratchet, enabling you to manually rotate the pump without starting the engine, circulating fresh oil throughout the entire system, cylinder walls, valve lifters, and rocker arms. By priming the oil system this way, you verify proper pump operation, confirm oil distribution, and saturate critical engine components with protective lubrication before combustion ignition occurs. The compact, lightweight design (0.58 lbs) fits easily in your toolbox and works alongside your preferred oil pressure gauge setup.

Mechanics performing engine rebuilds, vintage car restorations, or performance modifications should always prime their oil system before initial startup—this is non-negotiable best practice. The Oil Pump Primer Ford 260-351W 1/4in Hex is compatible with all Ford 260, 289, 302, and 351W engines that use the standard 1/4-inch hex pump shaft configuration. Installation is straightforward: remove the distributor, slide the hex drive onto the pump shaft, and hand-crank with a socket wrench until resistance subsides and you observe consistent oil pressure on your gauge. This simple ten-minute step can mean the difference between a long-lived engine and a seized block.