The Raymarine Type 2 Reversing Hydraulic Pump is designed for boats with steering systems equipped with 9.821 cu. in. (230cc - 350cc) hydraulic steering rams. The Type 2 drive is compatible with 400 Series core packs. SPECIFICATIONS:* Part#: M81121* Maximum Stall Pressure: 100 bar (1, 450 psi)* Peak Flow Rate (No Load): 2, 000 cc/min.* ACU Used: ACU-400 Maximum stall pressure: 100 bar (1, 450 psi) Peak flow rate (no load): 2, 000 cc/min. ACU used: ACU-400 | Type 2 Reversing Hydraulic Pump - 12V