Mercury 858452-1 859772-1 Cylinder Head Seal Set V-150 V-175 V-200 EFI DFI 2.5L Flame Arrestor I think this is an

I think this is an earlier variant as the exhaust end is a bit longer than more modern propellers

This is a bigger size than the standard style of cleat used on 1970's Sea Ray boats that were under 20' long

Not Sure what brand this is possible Perko

and if you have any questions or looking for a specific reverse lock setup

Appears all of the screws themselves match

Mercury 858452-1 859772-1 Cylinder Head Seal Set V-150 V-175 V-200 EFI DFI 2.5L Flame Arrestor I think this is anPart Number(s) Included (Enough parts to do one side only) Quicksilver Mercury Mariner 858452 1 Seal (x1) Quicksilver Mercury Mariner 859772 1 Seal (x3) **Original packaging may look different than pictured, and in some cases may not even be included with the item.** Application & Compatibility Compatibility details have not been added at this time, if you are unsure just ask! (or check with a parts diagram) Purchase with confidence! This is a NEW