Every Sweet Mfg. pump is tested and adjusted for correct flow and pressure. These are the most common part numbers.
Part No. Description
305-70231......Steel pump with pulley (1000 psi)
305-70230......Steel pump w/o pulley (1000 psi)
305-60231......Alum pump with pulley (1000 psi)
305-60230......Alum pump w/o pulley (1000 psi)