Sierra Exhaust Flapper 4" with Clamp

4 Inch Exhaust Flapper Valve with Clamp for Boat Transom Protection

Protect your engine and exhaust system with a durable 4 inch exhaust flapper designed to keep water out and performance strong. Made from weather resistant rubber, this flapper helps prevent backflow while reducing noise and extending the life of your marine exhaust components. Easy to install with the included stainless steel clamp, it’s a simple upgrade that delivers peace of mind on the water.

Features

• 4 inch exhaust flapper valve for marine applications
• Weather resistant rubber for long lasting performance
• Helps prevent water backflow into exhaust system
• Reduces exhaust noise and splashback
• Includes stainless steel hose clamp for secure fit
• Easy installation on most boat exhaust outlets