1990 MerCruiser Inboard Engine Models Where can I find my serial number? 3.9LD [PORT] 33912B9CS 3.9LD [STARBOARD] 33922B9CS 5.7L [SKI] 3570111CS 3579111CS 5.8LD 35812C9CS 35822C9CS 642D 33422B9CD 33422K9CD 3423299CD 34232B9CD 34232K9CD 7.4L [CARB] 37431K9AS 37431M6AS 8.2L 38230M7AS 38231B4AE 38231B4AS 38231C6AE 38231C6AS 38231D6AS 38231D7AE 38231K4AS 38231L6AS 38231M7AS 38232C4AS 38232D6AS 38232E7AS 38232K4AS 38232L6AS 38232M7AS 38239M7AS 8.2L [CARB] 38232C6AS
8.2L 38230M7AS 38231B4AE 38231B4AS 38231C6AE 38231C6AS 38231D6AS 38231D7AE 38231K4AS 38231L6AS 38231M7AS 38232C4AS 38232D6AS 38232E7AS 38232K4AS 38232L6AS 38232M7AS 38239M7AS
