OMC 383420 0383420 Fuse And Lead Assembly Wiring Harness Stringer Ring Terminal Harmonic Balancer One way to know is

One way to know is if your propeller shaft is not tapered at the base where it sticks out of the bearing carrier (it will be stepped) and you are using 37966 Shift Crank

390-9355A2 (As a replacement for the box one - As me about a harness if you need one for the conversion)

27-24423 Gasket

Found on Early MerCruiser GM 6cyl engines MerCruiser GM 6cyl 150hp 230cid 1964-1966 (single carburetor version only)

Also found on V4 Outboards (which had electric shift) 1966 & 1967

OMC 383420 0383420 Fuse And Lead Assembly Wiring Harness Stringer Ring Terminal Harmonic Balancer One way to know isPart Number(s) Included OMC 383420 0383420 Fuse and Lead Assembly (Ring Terminal Connection) Other Details Freshwater Used Parts Purchase with confidence!