Replacement Motor Top 500 Series Pump

The Replacement Motor Top 500 Series Pump from Magnafuel/Magnaflow Fuel Systems is an OEM-quality replacement component engineered for anyone maintaining or rebuilding high-performance fuel delivery systems. This pump top assembly sits at the heart of 500 Series fuel pump operations, controlling fuel distribution and regulating flow to your engine's fuel rails. Whether you're servicing an existing Magnafuel pump after years of reliable use or restoring a classic street machine with modern fuel system reliability, this replacement top ensures your pump continues delivering consistent pressure and volume without compromise.

The pump top houses critical internal passages and valve staging that determine how fuel pressure and flow are managed across your fuel system. Constructed with precision engineering, the Magnafuel motor top is designed to withstand sustained operating pressures while maintaining tight tolerances that prevent internal leakage and fuel loss. Compact and lightweight at just 0.22 lbs, the assembly installs directly atop the 500 Series pump motor, making it ideal for custom fuel system builds where space optimization matters. The compact 5.35 x 0.8 x 5.45-inch footprint fits seamlessly into tight engine bays common on street rods, race cars, and modern performance vehicles.

Mechanics and performance enthusiasts rely on this replacement component when existing pump tops show wear, internal passage degradation, or fuel weeping at seal interfaces. Installation is straightforward—no exotic tools or specialized knowledge required—making it an economical repair option compared to full pump replacement. This part is essential for anyone running a Magnafuel 500 Series pump in carbureted or EFI applications, from bracket racing and autocross competitors to daily-driven classics seeking dependable fuel delivery. Verify your existing 500 Series pump configuration before ordering to ensure proper fitment and uninterrupted fuel system performance.