1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 138Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 138

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377 CID6.2L ENGINES
IMPORTANT: Always use new crankshaft rear main oil seal and new oil seal retainer gasket when installing the crankshaft rear main oil seal retainer1 Install new oil seal reta