Mercury Kiekhaefer Outboard Vintage Boat Motor ITEM Parts 11-53916 Wing Nut Pulley - Water Pump The V6 ones generally always

The V6 ones generally always would have one of the little holes "filled" of the ones you see on the Perimeter

27935 Transfer Port Cover

and you will either need to replace the wire

but looks like it was rebuilt with permatex at some point

Mercury Kiekhaefer Outboard Vintage Boat Motor ITEM Parts 11-53916 Wing Nut Pulley - Water Pump The V6 ones generally alwaysItem Description Mercury Part Number 11 53916 Nut Wingnut I had a large amount of these type of items that I wanted to process in a short time, so more details for compatibility will be added later for those of you that don't have access to the parts diagrams. If you are unsure on compatibility feel free to ask! Purchase with confidence! General Disclaimer (please read) These are New Old Stock Parts from a large mercury Mark & K models cabinet I have.