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Start the engine using a reliable water supply (flushing muffs or in water) and verify a strong
The core item is the impeller
Professional installation is highly recommended for safety and to ensure peak performance
The kit serves as a direct replacement for OEM and aftermarket part numbers
Water Pump Impeller Repair Kit – Fits Mercury/Mariner 30-70 HP (Replaces 46-77177A3, 77177A3) Sherwood Start the engine using aProduct Details This is a complete Water Pump Impeller Repair Kit Fits Mercury Mariner 30 70 HP (Replaces 46 77177A3, 77177A3), designed for various 2 stroke outboard engines from 19761997. The kit includes the impeller, housing, gaskets, and all necessary seals and hardware for a full service, ensuring your engine's cooling system functions reliably. It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 46
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