Sea-Dog Line 521130 Exhaust Thru-Hull Fitting - Cast 316 Stainless Steel

The Sea-Dog Line 521130 exhaust thru-hull fitting is engineered for reliable marine exhaust discharge applications. Constructed from corrosion-resistant cast 316 stainless steel, this fitting is built to withstand the harsh marine environment and provide long-lasting performance.

Key Features:

• Cast 316 stainless steel construction for superior corrosion resistance
• Includes stainless steel flap valve with integrated rubber seal
• Prevents backflow of water into exhaust system
• Flapper design minimizes water intrusion when engine is off
• Designed for through-hull installation on powerboats and sailboats
• Suitable for diesel and gasoline engine exhaust systems

This thru-hull exhaust fitting provides a professional solution for routing engine exhaust through the hull while preventing water from entering the system. The rubber-sealed flap creates a positive seal when closed, protecting your engine and exhaust components from saltwater damage.