807078A 6 Mercruiser MANIFOLD ASSEMBLY, Exhaust

FASWORX Two Cast Iron Exhaust manifolds Compatible with Mercruiser 7.4L, 8.2L, 454, 502
FASWORX TWO Exhaust Manifolds for Mercruiser Engines: 454/7.4L and 502/8.2L. Fits 1981 and newer. DOES NOT FIT ENGINE WITH SERIAL NUMBERS THAT START WITH 8M || Compatible with Mercuiser 807078T10, 807078T09, 807078A6, 807078A4, 807078A2, and 89011A8.CASTING NUMBER 866632-C || Gaskets have tinged tinplate-reinforcement. These Manifold Gaskets are made from flexible graphite composite reinforced sheets laminated with stainless steel (marine grade) foils. These are NOT cheap paper gaskets! || These manifolds are the same externally as the factory Mercruiser manifolds but these have 30% internal cooling surface area to reduce exhaust temperatures. See picture for independent test results. These manifolds produced 12HP more over stock manifolds! || Includes: Two manifolds Two block gaskets Two riser gaskets Two hose elbows

Sierra International 18-957-2 Manifold
Sierra International Sierra manifold || Meets or exceeds the original equipment quality || Will fit either port or starboard