R4 5-Stage Dry Sump Oil Pump

The Peterson Fluid Systems 04-5054 is a 5-stage R4 dry sump oil pump designed for motorsports applications. It features 1.200 in. pressure and 1.200 in. scavenge stages with a bellhousing mount. Constructed from 6061 T6 aluminum with twisted lobe rotors, this pump is built for performance and reliability.

The R4 oil pump utilizes a unique twisted lobe rotor design for consistent oil pressure, even with high-temperature, low-viscosity oils, and its scavenge sections create significant vacuum. The pump has a 5/8 in. steel drive shaft with a 3/16 in. keyway for accessory drives and includes a rear drive provision for mounting components like fuel pumps or power steering pumps with the appropriate adapter.