OMC OEM GEAR HOUSING ASSY., 21:16, 5.7 L. NOT SHOWN (INDENTED PART NAMES INDICATE CONTENTS OF PRECEDING ASSEMBLIES) USE 21:17 GEAR RATIO FOR 5.7 LITRE MODELS CONVERTED TO RUN AT HIGH ALTITUDE (ABOVE 5000 FT./1524M) METALLIC CHARCOAL PAINT - 0984770 | boats.net