JOHNSON OEM PINION GEAR. AVAILABLE IN COMPLETE GEAR SETS ONLY 55 & 60 HP 1968-71 USE 397494 FOR 65 HP1972 USE 397492, 65 & 70 HP 1973-75 USE 397490 70 HP 1975 & LATER USE 397338. AVAILABLE IN COMPLETE GEAR SETS ONLY 55 & 60 HP 1968-71 USE 397494 FOR 65 HP1972 USE 397 - 0313343 | boats.net