Sierra Exhaust Flapper 4" with Clamp Non-Current This switch can also combine

This switch can also combine battery banks for emergency starting

Part number: 5200701

NytroLite Foam

outdoor fabric

Interior cinch-cord hem to seal out cold

Sierra Exhaust Flapper 4" with Clamp Non-Current This switch can also combine4 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, its a simple upgrade that delivers peace of mind on