Originally Posted by TEE
I think everybody should carry a spare, but have to agree that off brand impellers may not be of the same quality as the manufacturer of the engine.
Right. They may be better or worse--I just don't know. OEM impeller failures don't seem all that uncommon.
My guess is running the pump dry before it's primed contributes to the risk of delamination
at the hub. That is one reason I like to put some silicon grease inside the pump housing before starting the engine
first time after changing the impeller or after the boat is launched.