Cast of 85-5-5-5 naval bronze housing for maximum strength Includes a pull-out strainer screen assembly for easy spill-proof maintenance The heavy-walled, high strength plastic bowl is securely fastened to the manifold with a bronze retainer ring plate Unique design ensures a firm mount to the engine stringer and allows full 360 rotation of the top housing to optimize attachment to plumbing fittings A perfect choice for twin engine installations