Mercury Kiekhaefer Outboard 10-22728 Co-Pilot Ring Screw Mark 5 6 6A KF5 KF3 Cooling System & Hoses Stamped 2778810

Stamped 2778810

153 tooth unit

Part Number 2983A5 (according to parts diagram) & 46307 & 48006 (stamped on the metal bracket parts) Used late 60's to 1977

Michigan Wheel

so I had to do a little bit of legwork to figure out it was

Mercury Kiekhaefer Outboard 10-22728 Co-Pilot Ring Screw Mark 5 6 6A KF5 KF3 Cooling System & Hoses Stamped 2778810Item Description Mercury Part Number 10 22728 Co Pilot Ring Clamp Screw found on Mark 5, 6, 6A KF5 KF3 (and possibly others). Purchase with confidence! General Disclaimer (please read) These are New Old Stock Parts from a large mercury Mark & K models cabinet I have. Some of these parts might work on more models than listed in the title and or the description, Please do your own research There might be some surface rust, missing paint, scratches,