I believe it comes as a kit Kari ( shaft / impeller ) ... you can also buy the housing seperately as well as they are notorious for cracking

actually look at the link I posted above for the pic of the whole assembly

Cheers

Wondering on best way to clean a mag12 pump.
Assuming nothing is broken, any tricks (ie like using vinegar..past by a thread like that somewhere) to clean it properly?

--I've cleaned many powerheads and canister filters...this is my first mag pump.

Thanks

Michael

take it all apart and soak it in vinager overnight.

Steve