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Frequency should increase if operating in saltwater or sandy/silty conditions
and MD series from the 1970s–2000s)
Neoprene impellers
1 x Thermostat (Replaces OEM #3831424)
Exhaust Water Shutter/Flapper – Fits MerCruiser V6 & V8 Engines 1982–1987 (Replaces 99370A2, 23-92852, 92802, 18-2733, 89160, 9-42801) 235HP } /* Key: prevent wrappingProduct Details This Exhaust Water Shutter Flapper is designed to prevent water from flowing back into the engine through the exhaust system. It is engineered for MerCruiser V6 (4. 3L) and V8 (5. 0L, 5. 7L) stern drive engines produced between 1982 and 1987 that are equipped with 3 inch exhaust Y pipes. This part serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 99370A2 and Sierra 18 2733. Acts as a
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