Mercury - Quicksilver Exhaust End Cap Riser Gasket Crusader & Mallory Replacement Marine-Grade Sealing Component 8M0162537. Overview. There's something grounding about maintaining your inboard engine with your own hands - that moment when you pull off a worn part and replace it with something you trust. It's the kind of care that keeps an engine running strong, season after season, and gives you confidence every time you push off from the dock. The Mercury Marine part number 8M0162537 Exhaust En