378247 OMC BEARING

OEM OMC Johnson/Evinrude bearing (378247) is a friction-reducing component that supports rotating shafts in the powerhead or lower unit assembly. Enables smooth shaft rotation and load distribution. Worn bearings cause noise, vibration, and eventual shaft seizure. Replacement necessary during engine rebuild or if grinding/knocking sounds develop. Bearing application varies by engine model; verify correct type before installation.