Which impeller kit?

[No Worries]

I don't have a manual, cant read the serial # and if at all possible, I'd like to order the kit prior to disassembly. What I do know is I have a 1984 alpha 1. My Internet searches bring up 2 or 3 different kits. i think I need a Sierra 18-3320

Thanks for any help!

 

[Bt Doctur]

that is the pump, iboats sells it too

 

[No Worries]

that is the pump, iboats sells it too

It wasn't an 18-3320. The housing base was too large and it didn't fit. I ended up using the old housing with the new gaskets, rings and impeller. Still don't know what the correct kit is.