Replace corroded or freeze damaged Pleasurecraft risers easily Exhaust risers and manifolds have a tough life. Constant exposure to salt and fresh water and heat cycling promotes corrosion resulting in failure sooner than other engine parts. Inspection and consequent replacement is common. Sierra makes the task of replacing risers easier. Sierra risers are designed for a quick installation. Each riser is an exact OEM match and is leak tested for quality assurance. Mating surfaces are CNC machined to provide the best possible seal without additional preparation. Precision castings feature uniform wall thickness. Finally, they are primed and painted to stand up to the marine environment. Look no further than a Sierra kit for quick out of the box installations Key Features Engineered to meet or exceed OEM specifications Adds 6" of height to exhaust riser to prevent back-flow issues or add exhaust hose clearance Fits: Ford based small block V8 302 and 351 cu in applications with 3" exhaust Backed by SeaStar Solutions Limited Two-Year Warranty The Sierra Engine Parts Selector In addition to carb kits, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see ourEngine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.ApplicationOEM Part NumberGLM54110Mallory9-40810Osco29001PleasurecraftRO29001