Raymarine Type 2 Pump 12V - M81121

The Raymarine Type 2 Pump 12V (M81121) is a professional-grade hydraulic autopilot pump designed for boats with traditional hydraulic steering systems. This reversing pump interfaces seamlessly with Raymarine Evolution autopilot systems and the ACU-400 corepack, enabling precise, hands-off steering control by managing the flow of hydraulic fluid within your vessel’s steering circuit. It’s engineered for reliability in demanding marine conditions and matched to steering rams with capacities from ~230 cc to 350 cc (14 – 21 cu in). 

🔧 Technical Specifications

General

• Model: Raymarine Type 2 Pump 12V – M81121

• Power: 12 V DC hydraulic reversing pump compatible with standard marine electrical systems. 

• Corepack Compatibility: Designed to work with Raymarine ACU-400 autopilot systems. 

• Steering System Type: Traditional hydraulic steering (not electric or mechanical).

Performance

• Ram Capacity: Matched for hydraulic steering rams of approximately 230 – 350 cc (14 – 21 cu in). 

• Reversing Pump: Provides bi-directional hydraulic flow for responsive steering control. 

• Maximum Stall Pressure: Up to ~1,450 PSI (100 bar) under load. 

• Peak Flow Rate: Approximately 2,000 cc/min (122 cu in/min) (no load). 

• Average Power Consumption: ~60 W (typical hydraulic operating load).

Installation & Construction

• Mounting: Submersible, floor-mounted or bulkhead installation in engine or pump space recommended. 

• Hydraulic Interface: Directly connects to boat’s steering hydraulic lines.

• Rugged Build: Marine-rated design for reliable service life in marine environments. 

Compatibility & Use

• Autopilot Systems: Pairs with Raymarine Evolution autopilot systems and ACU-400 series control units.

Boat Types: Ideal for boats with existing hydraulic steering that require autopilot integration.

⭐ Key Features

• 12 V reversing hydraulic autopilot pump for Evolution systems

• Compatible with Raymarine ACU-400 corepack autopilot units

• Matches hydraulic steering rams ~230 – 350 cc (14 – 21 cu in)

• Delivers high-pressure hydraulic control with ~1,450 PSI capability

• Provides precise bidirectional flow for smooth autopilot steering

• Rugged marine-grade design for long-term reliability

• Designed for boats with existing hydraulic steering systems

Manufacturer : Raymarine
Manufacturer Part No : M81121
UPC : 023193811215