This 12V 50A alternator is a Recmar replacement designed for select Mercury/Mariner 75–115HP EFI FourStroke outboards. It cross-references Mercury OEM part number 8M0063970 (also shown as 50-897755T / 897755T) and is intended to restore correct battery charging performance when the correct match is confirmed.

Before ordering: verify your engine model/serial number and the part number on the alternator currently fitted. Fitment can vary by engine version.

• Part type: Alternator
• Power output: 12V, 50A
• Pulley: 4-groove (serpentine)
• Typical applications: Mercury/Mariner 75HP EFI, 80HP EFI, 90HP EFI, 100HP EFI, 115HP EFI (FourStroke)
• OEM cross-references: Mercury 8M0063970, 50-8M0063970, 50-897755T, 897755T (superseded by Mercury 8M6013463)
• Aftermarket reference: Recmar REC8M0063970
• Notes: Commonly listed as a rubber-mounted alternator that requires a ground strap—confirm your installation hardware and wiring.

Fitment varies by year and serial range—always match by OEM number and engine details before purchase.