This is a replacement pressure washer vertical shaft 7/8" pump. It replaces part numbers 308653052, 308653006, 308653025, RY802900, RY803000, RY80930, BM802711, BM802823, BM80920 and more. 2400-2750, PSI, 2.2-2.4 GPM. Includes thermostatic valve. Water inlet: 3/4" internal thread, outlet: M22-inner diameter 14mm. Mounting bolts from main center shaft to each mounting bolt is 4", center to center. Spacing between mounting bolts is 7 11/16", 6 3/16" and 6 7/16".