Hypro 9910KIT1640 Gear Box

This 9910KIT-1640 (AR1636) gear box from Hypro/AR is designed to fit 5.5 HP gas engines and fits pump models 9910-D30 (AR30), 9910-D303 (AR303), 9910-D403 (AR403) and AR40. If you want to use pumps like 9910-D50 (AR50), 9910-D503 (AR503) or 9910-D813 (AR813), just ensure that they don’t exceed this boxes 5.5 HP threshold. This is a 6:1 box and comes with a 3/4″ shaft for ease of use.