This Legacy HD Pump GS4040G.3, 4.0GPM @ 4000PSI, 3400RPM (8.751-207.0) is the outcome of 2-1/2 years of research and development, resulting in a number of upgrades over previous pump models. Premium, long-life components and new design features make the Legacy HD pump a stand out among other high-pressure pumps. It is designed exclusively for pressure washers and is protected under the Legacy 5 year limited warranty. It is a direct replacement for the following pumps: Landa LS4040 G, Hotsy HS4040 G, and Karcher KS4040 G.