M81120 - Raymarine Type 1 Pump 12V | Aztek Computers
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SKU: SY0L4MYVNO |  Mfg. Part: M81120  | UPC: 023193811208  | 
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M81120 - Raymarine Type 1 Pump 12V

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$935.63 
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Product Overview

Type 1 Pump 12volt
Reversing 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 corepack

Corepack Used S1 or S1G

Ram Capacity 4.9in - 10.5in
(80CC-172CC)
Maximum Stall
Pressure at 12V
750psi (50bar)


(no load) 67in/min (1000cc/min)



Corepack Used S2 or S2G

Ram Capacity 4.9in - 14in
(80cc - 230cc)
Maximum Stall
Pressure at 12V
750psi (50bar)

Peak Flow Rate
(no load) 67in/min (1000CC/min)


























Expert Overview

The Raymarine Type 1 Pump 12V is a reversing hydraulic pump designed for marine steering systems. This unit is suitable for integration with existing hydraulic steering rams ranging from 4.9 to 230 cubic inches (80cc to 230cc). It is specifically engineered to be compatible with Raymarine S1/S1G and S2/S2G corepacks, providing a foundational component for an autopilot system. The pump facilitates precise steering control by managing hydraulic fluid flow, making it a practical choice for vessels requiring reliable automated steering. When paired with an S1 or S1G corepack, it supports ram capacities between 4.9 and 10.5 cubic inches (80cc-172cc) and delivers a maximum stall pressure of 750psi (50bar) at 12V. This M81120 pump addresses the need for a robust and compatible hydraulic drive in marine navigation setups.

Product Details

  • Manufacturer:
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  • UPC:
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  • Raymarine
  • M81120
  • B00GLWTD40
  • 023193811208
  • New
  • 5.85 lbs
  • 16 X 16 X 16
  • Jul 31, 2026
  • Jan 23, 2019
  • CHINA
Product Identifiers: Brand: Raymarine • Part #: M81120 • UPC: 023193811208 • ASIN: B00GLWTD40

Frequently Asked Questions

What hydraulic ram capacities is this pump compatible with?

The Raymarine Type 1 Pump 12V is designed for use with hydraulic steering rams ranging from 4.9 to 230 cubic inches (80cc to 230cc).

Which Raymarine corepacks are compatible with this hydraulic drive?

This Type 1 hydraulic drive is compatible with both Raymarine S1/S1G and S2/S2G corepacks.

What is the maximum stall pressure of the pump?

The maximum stall pressure for the Type 1 Pump 12V is 750psi (50bar) when operating at 12V.

What ram capacity does this pump support when used with an S1 or S1G corepack?

When used with an S1 or S1G corepack, the Type 1 hydraulic drive supports ram capacities between 4.9 and 10.5 cubic inches (80cc-172cc).

M81120 - Raymarine Type 1 Pump 12V

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$935.63