OMC Cobra 2.5L 3.0L 5.0L Upper Gear Unit Assembly R21:18 Model 985263 1986-1993. Superceeded part numbers 983885, 0983885, 984771, 0984771, 986382, 0986382. Used on the 2.5L 1986. Used on the 3.0L 1986-1989. Used on the 5.0L 1986-1993. Gears inspected & are in good condition. U-Joints have some surface rust but move freely. Housing has paint deterioration & pitting. Boat was in service summer of 2014. Used in freshwater.

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