The Recmar REC863077T is a marine alternator supplied as a replacement for the MerCruiser/Quicksilver alternator assembly 863077T. It’s a Delco-style alternator for serpentine belt applications using a 6-groove (50 mm / 1.97 in) pulley, intended to restore correct battery charging when the correct match is confirmed.

Before ordering: MerCruiser alternator fitment varies by engine package and serial number. Always match the OEM number on your existing alternator and confirm your engine details to avoid ordering the wrong unit. (This alternator is commonly listed as 70A, but some OEM catalogs list 65A for part 863077T.)

• Part: Alternator
• Voltage: 12V
• Output: 70A (often listed as 65A in some catalogs)
• Regulator: Internal
• Pulley: 6-groove serpentine, 50 mm / 1.97 in
• Typical applications (verify by serial no.): select MerCruiser GM-based sterndrive & inboard V6/V8 engines including 4.3L, 5.0L, 5.7L, 6.2L, 4.5L MPI, plus certain 496/8.1L/8.2L packages
• OEM cross-references: MerCruiser 863077T, 863077-1, 863077R01, 86307AR01, 889463R01, 889463R1, 8M0095472
• Additional cross-references: Delco 19020611 / 19020612 (Delco 7SI family)
• Brand: Recmar (aftermarket replacement)

Fitment varies by engine version and charging system. Confirm compatibility by engine model/serial number and the reference number on your existing alternator before purchase.