The A-RC0 Exhaust Cap, 1-1/2" is a weather-resistant flapper-style exhaust cap designed to keep rain, debris, and pests out of vertical exhaust stacks. Built to fit 1-1/2" exhaust pipe, this cap opens automatically with exhaust pressure and closes when the engine is off, helping protect internal components from moisture intrusion. It’s a simple upgrade that helps extend exhaust system life—because water in the pipe never improves performance.
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