Finally traced the source of my oil leak down to the fitting for the remote oil filter. Its the fitting that the holds the plate to the filter adapter on the block. Female end on one side which slides theough the plate and the. The oil line threads on the male end. GenIV block. Anyone know where i can buy this fitting? I searched online over an hour with no luck. Ill probably replace the oil line as well kust cause its off and its a major PITA to remove.

Are you sure a Mark IV ? I thought those fittings where on Gen V/VI's if I'm understanding you correctly.

See pic below. You are talking about #7 (part# 22-818401 ) right ?
And website: http://www.mercruiserparts.com/bam/s...31906/1616/240

I think its a gen 4. It looks like #7 in that diagram but mine has a male end on one side (the oil line has a female end).

What engine + model ? What year ? Any serial # ?

Looks similar to this
https://www.ebay.com/p/?iid=23210753...pp=true&chn=ps

Except my oil filter isnt mounted on the manifold so the bracket/lines are different. I have a picture of my setup but dont know how to post it.

that's an inverter flare fitting, doesn't take much pressure to be tight and seal, what gorilla did that.....I may have an extra, will check this afternoon if you're interested...

This is how I remember the Mark IV's
Note: #11 (the base) is threaded, therefore it, itself, screws on. No adapter going thru it.

The fitting came loose from the filter adapter. I took the oil line off the fitting, Tightened the fitting down. Then put the line back on and must have tightened the oil line to much and stripped the threads. Yea if you have one id be interested. Thanks.

Mine definitly has a firting that slides through the plate. I have the fitting in my pocket. I thought my engine builder told me it was a gen 4. I know he said it was a bow tie block and it had been converted to a roller motor.

This is the exact piece i need. Also the gasket/oring behind it. I believe is merc part # 22-806121

https://www.nlamarine.com/collection...ant=1227753472

Looks like everyone is out of stock.