For 1990's vintage 454 seawater pump impeller housings I can only find the large (not quad ring) impeller housing o-ring available with the impeller kit. I've searched multiple Mercruiser parts sites (fiche), ebay, amazon, and general internet to no avail. Is it available separately and/or does anyone know an industry number, diameters of the o-ring, Mercruiser (or other) part number?

Engine SN- 0F886167

Thanks for any help you can lend!
Keith

Yes they do -- I have them as well brand new.

I can send you one for free so you can tell everyone how nice and smart I am. haha

Anyone who doesn't know that must be living under a rock!!! I actually need a pair before next weekend, (I'll purchase of course). I can call you tomorrow if you'd like to PM me your number or if more convenient I'll gladly accept the part number and source locally.

Thanks very much for your input! You're always active in helping.

Merc part number here. It was the only way I can show on a public forum.

I would have thought a local Merc dealer surely would know this even on a phone call. Sorry I could not up earlier - I am busy during the day.

https://www.ebay.com/itm/25-94288-Qu...4383.l4275.c10

Thanks, I was under the impression the quad ring and impeller housing o-ring were two separate items. For example look at its size in this picture

https://www.ebay.com/itm/OEM-MERCURY-MERCRUISER-QUICKSILVER-RING-QUAD-25-94288/331600220502?hash=item4d34e9d156:g:yLIAAOSwHnFVnBQ r&vxp=mtr

For the archives, I did a couple more hours of research and came up with MC #25-33465 and Sierra # 18-7163.

Keith

they are 2 different part numbers

here is the housing O ring part number from Merc. I would stick with a real Merc part here. You have to watch out what you buy on the net cause they all will list a Merc part number and most of the time its either a Sierra part or a GLM or a red rino or whatever from China.

Also in your link that is way high for that part number. Kills me that is higher than if you walked into a merc dealer and paid sales tax on top of.

Bravo impeller housing O ring ---- Merc part # 25-33465

Thanks, snagged a half dozen of them local at $3.67/ea. from a small local owned surplus dealer who had "tons of them." Go figure as the local Marine Max had 0 and the closest was 2 hrs. away for transfer. Rather support the "little guy" anyway.

Keith

Welp was too small for the Hardin impeller housing, popped right out. Re-used what was there and will be sourcing other options. Hardin said in the phone this week to use OE.