Oil Pump Ford Mod Motor 4.6L/5.4L/6.8L 91-18

The Oil Pump Ford Mod Motor 4.6L/5.4L/6.8L 91-18 by Melling is an internal, wet-sump high-volume oil pump engineered for Ford's modular engine platform spanning nearly three decades of production. This pump is essential for builders and restorers working on Gen I and Gen II modular engines—whether you're refreshing a 2V, 3V, or 4V cylinder head configuration—because it ensures consistent oil delivery under load while maintaining system pressure across idle, cruise, and wide-open throttle conditions. Proper oil circulation is non-negotiable for engine longevity, especially when running higher RPMs or modified fuel mapping.

As a high-volume internal pump, this unit delivers more oil per engine revolution than OEM stock specifications, which is particularly valuable when upgrading cam profiles, extending valve float limits, or installing performance rocker arms that demand increased flow to upper valvetrain components. The Melling M176HV uses proven gear-driven internal design housed within the front cover assembly, with precision-machined gearing that minimizes parasitic losses while maximizing delivery to critical bearing surfaces, main galleries, and piston cooling jets. The wet-sump configuration integrates seamlessly with the original pan design, eliminating the need for expensive fabrication or secondary reservoir modifications.

Installation suits both stock restorations and moderate-to-aggressive performance builds, making it a cost-effective upgrade for users seeking improved oil pressure stability without drivetrain redesign. Compatibility spans 1991 through 2018 model years across the 4.6L two-valve, 4.6L three-valve, 4.6L four-valve, 5.4L, and 6.8L variants found in Mustang, F-Series trucks, Expedition, Explorer, and marine applications. Verify front cover bolt pattern and oil gallery orientation before ordering to ensure drop-in fitment with your specific year and engine family.