MerCruiser Exhaust Y Pipe Water Shutter Flappers Replaces 807166A1

Exhaust Y Pipe Water Shutter Flappers for MerCruiser

This exhaust Y pipe water shutter flapper set replaces MerCruiser part 807166A1 and regulates exhaust flow and water shutoff in the cooling system.

Overview

These exhaust Y pipe water shutter flappers are a direct replacement for the original MerCruiser components. They function to prevent water from entering the engine through the exhaust Y pipe while also allowing exhaust gases to exit. Designed for MerCruiser marine engines, these flappers ensure reliable cooling and exhaust performance.

Built For Performance

• Direct replacement for MerCruiser part 807166A1
• High-temperature rubber construction withstands exhaust heat
• Prevents water backflow into the exhaust system
• Includes flapper and stainless steel pin for easy installation
• Precision molded to match OEM dimensions

On-The-Job Use

• Replaces worn or broken flappers in MerCruiser exhaust Y pipes
• Maintains proper cooling system operation
• Used during routine marine engine maintenance

Specs At A Glance

Good To Know

Q: How do I know if my flappers need replacement? A: If you notice water leaking into the engine or exhaust, the flappers may be worn. Replace them with this set for proper sealing.

Q: Are these flappers compatible with all MerCruiser engines? A: They are designed for MerCruiser exhaust Y pipes using the 807166A1 cross-reference, but always verify your specific engine model.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.