Boat Motor Muffs, Outboard & Inboard I/O Engine Flush Kit, Ear Flusher Hose Adapter for Marine Engine Winterizing, Flushing & Warming

[ STRONGER 2025 EDITION ] Our premium boat muffs outboard as well as I/Os are constructed with rubber, flexible water lines and water tight seals to test, cool, winterize, warm and idle your engine before using or as part of a winterizing kit. UNIVERSAL FIT: Our outboard motor muffs offer rotating ears and a U channel measuring 10.5" to rotate and adapt to almost any outboard motor and Inboard/Outboard I/O engines. Large ear muffs to flush away engine dirt while allowing easy flushing. DOUBLE SIDED: Increased water supply from two sides offers superior intake compared to old single sided boat motor muffs. The flexible water tight boat muffs measure 3 1/4" by 5" and bend to allow the flusher to snuggly pinch your intakes. STANDARD INSTALL: Our boat ear muffs outboard use connects to a standard hose with an included optional quick connect male adapter end and rubber washer. No tools needed and use with our without additional marine salt flush kit boat parts. WHY CHOOSE BETTER BOAT PRODUCTS: We are a family owned American business committed to making premium quality products and our customers happiness. We stand behind the quality of our products and will provide you with the best customer service.