2 GPM Gear Pump 12V For Motor Oil, Diesel Fuel or Water Transfer This pump will generate high pressures, but should be limited to 20-30 psi or damage to the motor may occur.3/8" NPT male Nickel platedbrass fittings on both sides are standard. Optional-8ANadapter available.Viton seals and Nickel plated pump housing and fittings.