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66083 (Stamped) 89111 / 89111T (Supeseded)
but can probably be used for the 1985-1988 models as well because I'm pretty sure visually they are the same
Connecting Rod: 608-7395A 2
F6637561 Packing / rubber trim rim seal still installed
46-2461 POB4001 S1060M 3292133
MerCruiser 78403A2 Alternator 37 Amp 12V Motorola 120hp 140hp 4cyl 3.0L 1979-89 Crankshaft 66083 (Stamped) 89111 / 89111TPart Number(s) Included Manufacturer Motorola Stamped Part Number 8MR2024F 8MR2023F Rated Amperage 37 Amp 12V 37 amp Internal Regulator 2 inch mounting foot Equivalent Part Numbers MerCruiser 78403A2 Sierra 18 5957 & 18 5966 General Application Compatibility Found on various mid 80's MerCruiser 4cyl & some BBC 454 models Please check with your parts manual to ensure the indicated part number matches as each alternator is specific to it's surround