Vernalift Side In/Top Out Muffler - 1.63in. Ports - 8.36in. Diameter

Extremely effective in reducing engine exhaust noise and preventing water from returning to the engine. High strength design provides a significant safety margin over other existing fiberglass lift mufflers. Exceeds ABYC specifications. For Gas/Diesel fuel type Inboards, Sailboats & Generator applications. Sound rating: Better. Use above or below the waterline.