MerCruiser Alpha One Clutch Dog 52-66063 Sliding Gen I Lower Unit Gearcase 70-90 Couplers these were from a running

these were from a running engine

This is Off a Mercury Mark 30E-2 4 cylinder Turbo Four (serial # 1086691)

don't be afraid to ask

but I did test this and it is completely functional

MerCruiser Alpha One Clutch Dog 52-66063 Sliding Gen I Lower Unit Gearcase 70-90 Couplers these were from a runningItem Details MerCruiser Sliding Propeller Prop Shaft Clutch dog 52 66063 used in all MC 1 R MR Pre Alpha Gen 1 Alpha 1 lower units 1977 1990 Used but in great shape! This is a stock photo you will receive one in similar condition. Application OEM SLIDING CLUTCH 52 66063, Same as: 52 824112 52 853594 52 853594T & aftermarket Sierra 18 2202 For 888 drives s n 3784375 and up For #1 drives s n 3469428 and up They used the same lower gearcase with all of