Re: johnson 1962 5.5 changing water pump impeller
The original part number of 277181 is for the original metal impeller housing. You have the updated plastic housing. The impeller you need is part number 0763735 or Sierra 18-3090
By the way, the reason you had no water flow is because that impeller seperated from the hub. Happens alot with Sierra impellers. Either that, or the key will grind a channel in the hub rendering it useless. I have a bag full of damaged Sierra impellers. I would reccomend OEM.