Yes, you almost always have to replace a leaking garbage disposal if the leak originates directly from the main plastic motor housing seams, the bottom center shaft, or a cracked metal casing. While leaks coming from loose slip-joint drain pipes, worn rubber gaskets, or the upper sink mounting flange can be easily repaired by tightening or replacing those specific components, a leak from the motor housing itself means the internal waterproof shaft seal has permanently failed. Verification: Dry the disposal thoroughly with a paper towel and run water to confirm whether the drip originates from a replaceable hose connection or the sealed motor housing.
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