Mercury 52-78959 52-823174T 52-8M0100493 Clutch Dog Outboard 175hp 220hp 200hp Water Pumps Appears that the flange on

Appears that the flange on the transom-tightening thumb screw might be missing on this

Used on Mercury 65hp & 70hp Models 1972-1979

15hp Super

Rotor: 393-4312

then this one should work

Mercury 52-78959 52-823174T 52-8M0100493 Clutch Dog Outboard 175hp 220hp 200hp Water Pumps Appears that the flange onPart Number(s) Included Mercury 52 78959 Sliding Clutch Dog (For lower unit gearcase propeller shaft) Superceded to 52 823174 52 823174T 52 8M0100493 Found on a handful of Mercury & Mariner V6 outboards but dependent on it's serial number V 135hp V 150hp V 175hp V 200hp V 220hp Please double check your outboards parts manual, or just ask if you are unsure on compatibility. **Original packaging may look different than pictured, and in some cases may