1990 OMC Sea Drive Models Where can I find my model number? 1.6L - Mechanical 16AMRDGH 2.0L - Hydraulic 20AHRDGH 2.0L - Hydraulic - CR 20AHLDGH 3.0L 30APRDGH 3.0L - CR 30APLDGH 4.0L 40BPRDGH 4.0L - CR 40BPLDGH
