Exhaust Flapper Protector Valve for Mercury Boat (5" & 6") (Sierra 18-4458, 107751, 89260)

Includes: - Exhaust Flapper Protector Valve

Fits Models: - Mercury Boat

Model Years: - Check fitment before purchase

Submodels: - Applies to listed models

Engine Options: - Compatible with standard engine options

Description: The Exhaust Flapper Protector Valve is designed for use in Mercury boats, providing essential protection for exhaust flappers. This part is crucial for maintaining optimal exhaust flow and preventing water intrusion into the engine. It is compatible with both 5" and 6" exhaust systems, ensuring versatility across various Mercury boat models.

Features: - Durable construction for long-lasting performance - Hassle-free installation with standard tools - Compatible with Sierra part numbers 18-4458, 107751, 89260 - Built to fit standard Mercury boat exhaust systems - Helps prevent engine damage from water backflow

Part Number: 18-4458