Waterlock/muffler with dual stage construction. Superior silencing of exhaust noise with minimal back pressure. 360° rotatable top chamber and connectors. Our NLP waterlocks are of dual stage construction featuring upper and lower chambers with a horizontal partition plate and a riser tube through the centre. The installation of the exhaust system even in confined engine spaces is greatly simplified due to the 360º rotating top chamber and both in- and outlet connectors. For optimum silencing of exhaust noise you can also use a VETUS muffler and gooseneck after the waterlock.Type NLP45 has an exhaust hose with inside diameter of Ø 45 mm with a capacity of 45 litres Comes with 2 securing straps. Including mounting brackets for bulkhead or floor mounting.