4" Exhaust Flapper Protector Valve for Mercruiser (18-4457) 12644Q01 12644A1

Includes: - 4" Exhaust Flapper Protector Valve

Fits Models: - Mercruiser

Model Years: - Check fitment before purchase

Submodels: - Applies to listed models

Engine Options: - Compatible with standard engine options

Description: This 4" Exhaust Flapper Protector Valve is designed for Mercruiser marine engines, providing essential protection for your exhaust system. It helps prevent water from entering the exhaust when the engine is not running, ensuring optimal performance and longevity of your marine engine.

Features: - Durable construction for marine environments - Simple installation with compatible Mercruiser models - Prevents water intrusion into the exhaust system - Precision-matched to fit standard exhaust configurations

Part Number: 18-4457, 12644Q01, 12644A1