Crusader Marine Prestolite 8EM2005KB Alternator 51-Amp 10251500 2-Groove Pulley Oil Senders Pumps and Remote Filters The threads on these are

The threads on these are "fine-thread" FYI

Center Bearing:  535-3190A 2 / 535-3180 (Stamped)

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

This is new old stock but is missing packaging & paperwork

KF7 KG7 KH7 Mark 15 Mark 20 models with Scintilla Magneto Assemblies

Crusader Marine Prestolite 8EM2005KB Alternator 51-Amp 10251500 2-Groove Pulley Oil Senders Pumps and Remote Filters The threads on these arePart 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