Neovane 1" Impeller (large) cooling pump 4 Bolt Round 2 1/2"

4 Bolt Round 2 1/2" pipe

This Impeller is classified as a small tapered neovane impeller and has 8 splines and measures 61mm at the wide base & 53mm at the top of the splines

17mm flow size

Engine & Drive Shaft Pattern

Neovane 1" Impeller (large) cooling pump 4 Bolt Round 2 1/2"Neovane Impeller suit Neovane Pumps with a 1" NPT pipe thread. These pumps also have 2 screws on their covers. This Impeller is classified as a large tapered neovane impeller and has 8 splines and measures 77mm at the wide base & 64mm at the top of the splines. Supplied with cross pin to drive through shaft & a gasket. If your pump is a 1 2" or 3 4" port pump with 8 cover locating screws , you require the smaller 1 2" & 3 4" neovane impeller available