Exhaust Flapper Valve & Clamp Kit – Fits 5" & 6" OD Exhaust Pipes (Replaces Sierra 18-4458, GLM 89260, Mallory 9-44002) family-yamaha-f150jc reduced noise and vibration Package

reduced noise and vibration Package Contents

as well as aftermarket equivalents from Sierra Marine (18-3031)

and 6AH-24410-71-00

This is a complete

433387 Johnson/Evinrude Multiple 88 2-Stroke 1987-1996 438556

Exhaust Flapper Valve & Clamp Kit – Fits 5" & 6" OD Exhaust Pipes (Replaces Sierra 18-4458, GLM 89260, Mallory 9-44002) family-yamaha-f150jc reduced noise and vibration PackageExhaust Flapper Valve & Clamp Kit Fits 5" & 6" OD Exhaust Pipes This marine exhaust flapper valve kit is designed to prevent water from rushing in through exhaust thru hulls when your boat is stopping, moving at slow speeds, or backing up. It is a crucial component for protecting your engine from water ingestion and potential damage. This kit is suitable for a wide range of inboard and stern drive applications with 5 inch or 6 inch outside diameter