No prop bore sleeve

[Swampseed]

Mercury 150hp 4 stroke
Model #1150F13HD
Ser# 2B128374
Prop Vengeance 19P

Should I have a plastic prop bore sleeve?? Pulled prop to drain lower unit and see that I don't have one. Thanks

[MichaelJ3]

Yes! It’s a $5-10 sacrificial part to protect the prop bore and gear case. Get another one and install.

[5keepers2]

I have had a pretty good bit of experience with bore sleeves. I also have the 150. I run a 23 inch Mercury Trophy prop which is a small barrel prop. My set up was eating bore sleeves. They would break pieces off normally and maybe I had one disappear. Went thru maybe 7 or 8 in a year or so. I figured out that small barrel was letting occasional piece of debris in and breaking bore sleeve. I put a cavitation ring ( about $30) on my prop and cured my problem. I have not had one break since installing the ring. If you have small bore prop you may have same problem I did. If your running a full barrel prop I can still see the possibility of losing one occasionally but not often. Hope this helps you!

[MichaelJ3]

I have had a pretty good bit of experience with bore sleeves. I also have the 150. I run a 23 inch Mercury Trophy prop which is a small barrel prop. My set up was eating bore sleeves. They would break pieces off normally and maybe I had one disappear. Went thru maybe 7 or 8 in a year or so. I figured out that small barrel was letting occasional piece of debris in and breaking bore sleeve. I put a cavitation ring ( about $30) on my prop and cured my problem. I have not had one break since installing the ring. If you have small bore prop you may have same problem I did. If your running a full barrel prop I can still see the possibility of losing one occasionally but not often. Hope this helps you!

I believe OP said he is running a Vengence, which is a standard bore prop, I believe. Still, sand, gravel, a pebble, fishing line, anything can get in and bust a tab off.
I used to eat them a bit too, but last one I put in I heated the retaining tabs w/ a hair dryer, and put a little outward bend in them to assist in the retaining force, and the last one lasted 4 years till it was so beat up that I decided to replace it. My suggestion is order 2 of them, then you have a spare; then when you need to use it, order another; this way you always have one on the shelf.

[moymurfs]

Need 1 = Order 3 ...very fragile for the environment they are exposed to.

[EuropeanAM]

The newer ones have a little better retention clips. Keep in mind- it's a sacrificial part so if it's damaged or gone it DID IT'S JOB by sacrificing itself rather than the very expensive gearcase housing and/or bearing carrier.

[Swampseed]

Thanks for the help going to pick up couple.