4.2gpm 100-2200psi - 16.5mm Shaft Dual End Shaft with Cover The .3 in the part number means Hight Temp Seals. Hydramaster: Part# 111-070 - CDS 4.6, CDS 4.8, Maxx 450D and Maxx 470D. Also marketed under part number AP41, HM-111070-EA