Check out MarineTorq's water pressure testing in action on a set of manifolds for a GM LS small block engine. MarineTorq stainless steel manifolds are the ideal replacement for leaking and corroded cast iron manifolds. What makes these manifolds so special? • MarineTorq manifolds are one-piece construction, meaning no joints, gaskets or leaks • We use premium grade stainless steel, which is over 2mm thick and has proven longevity • Stainless steel manifolds are up to 80% lighter than cast iron manifolds, reducing boat dead weight, and improving power and fuel efficiency • Each manifold includes sacrificial anodes to prevent electrolysis • A stainless steel water jacket provides an extra layer of protection and increases cooling • We offer a 10 year warranty on inboard engine manifolds, and 5 year warranty on jet ski manifolds. Find out more: https://www.marinetorq.com.au/ Facebook: https://www.facebook.com/marinetorq LinkedIn: https://www.linkedin.com/company/marinetorq/?viewAsMember=true #marinetorq #marineexhaustmanifold #stainlesssteelmanifold