Monster 8 GPM Bare Pump - 1/2hp, 12V DC

The Monster 8 GPM Bare Pump in 12V DC is built for mobile installations — trucks, trailers, skids, and off-grid processing systems where shore power isn't available. The GSM13 pumphead moves 8 GPM of vegetable oil, motor oil, or gear oil at 1800 RPM, and the 12V Baldor motor runs directly off a battery or vehicle electrical system. No handle, no pre-wiring — this unit is designed to be hardwired into your own setup.

If you're building a mobile WVO collection rig, a truck-mounted transfer system, or a custom skid that runs off 12V, this is the pump for it. The GSM13 pumphead is self-priming and handles light to medium viscosity fluids well. The Baldor motor is a NEMA 56C frame industrial unit — the same motor used in fixed installations, just wound for 12V DC. Mount it, wire it, and pump.

Bare Pump — No Handle, No Wiring

This unit ships without a carry handle or pre-wired switch. It is intended for permanent or semi-permanent installation where you will provide your own mounting, wiring, and controls. If you need a ready-to-run portable unit with a handle and switch, see the Monster 12 GPM Portable Pump line.

The GSM13 Pumphead

The GSM13 is a direct-drive, cast-iron positive displacement gear pumphead with helical-cut steel gears. It is self-priming, delivers fast and pulseless fluid transfer, and relies on the fluid itself for internal gear lubrication. Viton seals provide compatibility with vegetable oils, motor oils, gear oils, and other light to medium viscosity fluids.

The Motor

Custom US-Made Baldor industrial motor, 1/2HP, 1800 RPM, 12V DC, NEMA 56C frame. Ships bare — no switch, no cord, no handle. Wire directly to your 12V power source.

Specifications

• SKU: W2099
• Pumphead: GSM13 Cast-Iron Positive Displacement Gear Pump
• Motor Speed: 1800 RPM
• Flow Rate: 8 GPM
• Self-Priming: Yes
• Port Size: 3/4" NPT Inlet / Outlet
• Seals: Viton (high-temp)
• Motor: 1/2 HP, 12V DC, NEMA 56C
• Handle: Not included (bare pump)
• Wiring: Not included — requires hardwiring
• Viscosity: Light to medium viscosity oils

What's in the Box

• GSM13 Cast-Iron Gear Pumphead
• US-Made Baldor Motor (1/2 HP, 12V DC)
• Three-piece shaft coupler with rubber element
• Two (2) 3/4" NPT to 1" Hose Barbs

Note: Hoses, wands, switches, and mounting hardware are sold separately. This unit requires hardwiring into a 12V DC power source.