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170hp 180hp 185hp 260hp 350 305 CID 200hp 1981 1982 1983 1984 1985 1986 175hp 270hp 230hp 175 200 270 260 170 230
3L 2bbl & 4bbl models 1985-1993 (by 1994 everything has mostly switched over to the plastic vortec valve covers
Above all else
oil Cap 275000086
MerCruiser GM 454 7.4 V8 Gen VI 4-Bolt Main Bearing Crankshaft Retainer Caps 483 Crankshaft 170hp 180hp 185hp 260hp 350Part Number(s) Included Set of MerCruiser 454 4 Bolt Main Crankshaft Bearing Retainer Caps Stamped number on 4 5 of the caps is "483" From a Gen VI 454 Block MerCruiser 7. 4L Bravo V8 Gen VI 1996 1997 with engine serial number of 0K281757 We do not have the casting number of the block these came off of but the last 3 digits of the casting would have been 10237297 based on our research (96 03 Gen VI 6 Bolt Timing Cover 1 Piece Rear Main Seal Roller Cam
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