Propeller Exhaust Seal Ring for Mercury Trophy Plus & Powertech TRO4 - 878421

Automotive Authority

Prop Exhaust Seal Ring for Trophy

Replaces Part #’s: 878421
Includes: 1x Prop Exhaust Seal Ring

Prevents "blowout" and reduces ventilation by filling in the gap between the prop and the gearcase
Converts 4-1/4" Trophy prop to fit 4-3/4" gearcase

Fits: Mercury Trophy Plus and Powertech TRO4 propellers on V6 and V8 gearcases

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