This check valve kit services Holley's 12-150 HP electric fuel pump, restoring steady pressure and quiet operation when dirt has fouled the relief valve. It's the fix if you skipped a fuel filter between the tank and pump and the pump has started running noisy or losing pressure.
Specifications:
- Component Type: Gasket/Check Valve Kit
- Inlet Fitting Thread Size: 3/8 NPT
- Outlet Fitting Thread Size: 3/8 NPT
- Part Type: Fuel Pump Check Valve
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 12-820
Includes lower gasket, check valve, spring, and inlet screen filter. A companion gerotor kit (P/N 12-821) is also available to fully service the 12-150 HP pump.
FAQ
What pump does this check valve kit service?
Holley's 12-150 HP electric fuel pump.
What's included in the kit?
A lower gasket, check valve, spring, and inlet screen filter.
Why would I need this kit?
If a fuel filter wasn't installed between the tank and pump, dirt can foul the relief valve, causing pressure loss or pump noise — this kit restores proper sealing.

