Vetus NLPH waterlocks and mufflers cool exhaust gasses, minimize engine noise, protect your engine from the backflow of water up the exhaust when the engine is off and are easy to install in confined spaces. Each waterlock/muffler comprises two separate components that can be rotated to accommodate a particular hull shape and exhaust arrangement. Hose connections also rotate to help with installation. The body of the unit is made of injection-molded plastic to reduce weight and increase durability and corrosion resistance. Hose connection sizes range from 40 to 51 millimeters.

From $230. Vetus, vetus.nl/us