Thanks dpsariss !

That is funnier than hell - sorry to tell you that is for a Johnson outboard app. Good thing I know what is going on to help you guys from wasting your dollars and cents no pun intended.

Bup, will that Allen head drain work for a merc drive ?

You guys need to get out more...lol.

Another forum brought this up and showed the snap on tool for them.

I just received mine and am psyched.

Here you go:
https://store.snapon.com/Marine-Plug...e-P760267.aspx

See that is for the ETEC Johnsons - the gasket it comes with should not be used in a MERC or Mercruiser app. I am not sure of the head size fitting 100 % into the Merc / Mercruiser hole openings especially for the vent plug and for Bravo III apps drain at the bullet.

It is only listed for Johnson outboards and has been for a while. Mallory and that part # is long gone since Sierra bought out Mallory Marine a couple of years ago. It is offered as 18-4249 thru Sierra but again the script only pertains to Johnson outboards as no cross to Merc. Just saying as we go by the app for all warranty purposes.

You can google that part # 18-4249 it is the same cross as Mallory Marine. I still have all of Mallory parts lists and of course the current 2015 Sierra catalog. Try it and see but I do not know 100 % if the head size will fit exactly. OMC sterndirve drain plugs will not work for Mercruiser, I do know that nor Volvo's. Current ETEC's never worked on one nor care to. Not trained for them so I never tried to swapped out drain plugs in comparison.

Also I was busting hump in my last post no offense to anyone.

I've seen some with hex heads. Not sure where to get them..

They work in Merc. outboards.

for 35 years now I have found the best way to get overtighten or stuck gear oil drain plugs out is with a fat flat blade screw driver and a crescent wrench attached to the flat sides of the screw driver or a pair of vice grips attached to the screw driver to help with leverage while taking them out. Really never had a problem doing this as it has worked 99 % of the time. Push in on the screw driver handle hard and turn with the crescent wrench or vise grips.

If the slot is really JACKED up - then take a proper sized tipped pin punch and hammer - place pin punch on top edge of slot facing to loosen counter clockwise and hit it with the hammer, Never fails will loosen the worst of them.

Next if not to bad with the slot on the drain plug a impact driver and hammer works well to loosen them.

Hope this will help whomever for those jacked up gear oil drain plugs.

The appeal of the hex head drain plug screw to me is...
... having it ready and waiting on the end of a T-handle Allen wrench, and able to stick it in the lower hole as soon as the fill tube is yanked. I always end up with a giant mess, trying to get that damn screw started through a flood of soft KY-like fluid damn near up to my elbow. Yeah, I'm probably doing it wrong, I'm not a professional.

Put vent plug in when outdrive is full of new gear oil and put cap on drive reservoir tight but still leave fill fitting / adaptor screwed in the gear oil drain hole - trim drive all the way up 100 % - Use a magnetic slot screw starter to hold your slotted gear oil drain plug screw in place - unscrew fitting / filler adaptor with one hand and then stab the drain plug in and screw away with the other hand. Don't forget the gasket being placed on the drain plug beforehand.

really maybe less than a teaspoon gear oil mess to clean up and sometimes not even that much..