Type 1 Pump 12voltReversing hydraulic pump for use with steering systems equipped with 4.914 cubic inch (80cc 230cc) hydraulic steering rams. The Type 1 hydraulic drive is compatible with both S1/S1G and S2/S2G corepacks. Use the table below to determine the Type 1 hydraulic drive's capacity when used with each corepackCorepack Used S1 or S1GRam Capacity 4.9in - 10.5in (80CC-172CC)Maximum Stall Pressure at 12V 750psi (50bar)