The Garmin Reactor™ 40 Hydraulic Corepack with SmartPump v2 with GHC™ 20 Autopilot Instrument (Part Number: 010-00705-79) is a comprehensive, high-performance autopilot system engineered for hydraulically steered powerboats and sailboats. The heart of the setup is the SmartPump v2, a one-size-fits-most hydraulic assembly featuring a quiet, efficient brushless motor that automatically adjusts flow rates (0 to 2.4 L/min) to accommodate steering cylinders ranging from 4 to 24 cu. in. Controlled by a solid-state 9-axis Attitude Heading Reference System (AHRS) Course Computer Unit (CCU), the corepack allows flexible mounting orientations while actively minimizing heading error, rudder movement, and power draw in rolling sea conditions. It features patented Shadow Drive™ technology, which disengages the autopilot when manual helm intervention is detected and re-engages once a steady course is re-established. Dedicated helm control is provided by the included GHC™ 20 control head—a bright, 4-inch glass-bonded color display with anti-glare optics—while full NMEA 2000® networking enables complete integration with compatible Garmin chartplotters, optional wireless remotes, and quatix® smartwatches.

In the Box

GHC™ 20
SmartPump v2
Reactor 40 CCU (Course Computer Unit)
ECU (Electronic Control Unit) power cable
Interconnect cable
Shadow Drive
Buzzer
NMEA 2000® drop cables (2 meters)
NMEA 2000 power cable
NMEA 2000 T-connectors
Male and female terminators
Documentation

Technical Specification

Dimensions (H x W x D): 197 mm x 190 mm x 244 mm
Weight: 7.5 kg
Temperature range: From -15°C to 55°C
Material: Electronics Control Unit (ECU) – fully gasketed, aluminium alloy; bracket – carbon steel; manifold – aluminium alloy; motor – aluminium alloy
Power cable length: 2.7 m
Power input: 11.5-30 Vdc
Fuse: 40 A, blade-type
Main power usage: standby – less than 1 A; engaged – 5-10 A; peak – 34 A
Flow rate: Configurable from 0 to 2.4 L per minute
Compatible with steering cylinder sizes from 4-24 cu in; 7 second lock to lock up to 17 cu in

CCU Specifications

Dimensions: 3 19/32″ diameter (91.4 mm)
Weight: 159 g
Temperature range: From -15°C to 55°C
Case material: Fully gasketed, high-impact plastic, waterproof to IEC 529 IPX7 standards
CCU cable length: 3 m
NMEA 2000 power input: 9-16 V
NMEA 2000 LEN: 3 (150 mA)