The 2.1-liter pump kit is for use with larger boat steering systems that include ram sizes greater than 10 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. The pump assembly offers smooth and precise steering control for today's heavier 4 stroke outboards in multiple applications. Kit includes integrated check valve assembly, fittings and aluminum surface mount bracket. Order the Verado Adaptor kit Part Number 120-3000-00 for Mercury Verado use.