Garmin 2-Liter Pump Kit for GHP 10 Corepack 2-liter pump kit is for use with for most standard installations with hydraulic steering systems under 10 cubic inches.
Garmin 2.1-Liter High Performance Pump Kit for GHP 10 Corepack is for use with larger boat steering systems that include ram sizes between 10 cubic inches and 24 cubic inches and outboard applications of 2 or more motors with combined total horse power greater than 400hp. This includes both Verado and non-Verado applications.
Garmin GHP SmartPump put an end to guessing which pump size will work with your particular boat. One SmartPump works for most boats and applications.
Garmin Linear Drive Class A Drive Unit works with the GHP 12 Marine Autopilot System to control your sailboat's steering system. This device is designed for use with larger sailboats with up to 28,500 lbs (12,927 kg) of displacement.
Garmin 010-11201-00 Autopilot Unbalanced Valve Kit - Identify your steering cylinder. Balanced steering cylinders do no need this kit. Unbalanced cylinders do.