Collection: waterlocks - dual stage

Our NLP waterlocks are of dual stage construction featuring upper and lower chambers with a horizontal partition plate and a riser tube through the center. The installation of the exhaust system, even in confined engine spaces, is greatly simplified due to the 360º rotating top chamber plus rotating inlet and outlet connectors. For optimum silencing of exhaust noise you can also use a VETUS muffler and gooseneck, after the waterlock.