Crusader Marine Prestolite 8EM2005KB Alternator 51-Amp 10251500 2-Groove Pulley Oil Senders Pumps and Remote Filters 1967 1968 1969 1970 1971

1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

So on the flip-side 43-27891 & 43-27889 were the 14:28 ratio gears found on:

3L 262 Alpha Gen II Bavo MPI 4

The threads on these are "fine-thread" FYI

This should technically replace the earlier variant with the Non-Ventilated smooth exterior as well

Crusader Marine Prestolite 8EM2005KB Alternator 51-Amp 10251500 2-Groove Pulley Oil Senders Pumps and Remote Filters 1967 1968 1969 1970 1971Part Number(s) Included Manufacturer Prestolite Motorola Stamped Part Number 8EM2005KB Rated Amperage 51A 12V 51 amp Negative Ground 1 inch Mounting Foot General Application Compatibility I am unsure of the Crusader Inboard Part number for this beyond the stamped part number on the alternator itself and the 2 groove pulley. Other Details Freshwater Used Parts You get the alternator pictured All of our Sterndrive Marine Alternators are professionally