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Mercury/MerCruiser Applications: Compatible with most V6 and V8 gasoline engines from 1992 to present
and 18-8003-2
Is modification required for all engines
Remove the old gasket and thoroughly clean any residue from both mating surfaces
Other signs include a weak water stream from the tell-tale outlet
Lower Unit Drain Plug Kit – Fits Mercury/MerCruiser (Replaces 8M0058389, 79953Q04) 90-175HP Mercury/MerCruiser Applications: Compatible with mostProduct Details This Sea Sierra Lower Unit Drain Plug Kit is designed for Mercury and MerCruiser lower units that utilize a 3 8 16 threaded drain fill screw. It is broadly compatible with most Mercury & Mariner outboard models, excluding the Verado series, and fits a wide range of MerCruiser sterndrives, including MC 1, Alpha One (Gen I & II), TR, and TRS models. The kit serves as a direct interchange for several part numbers, including Mercury
