"iso certificated exhaust weather cap"

Chrome Plated Rain Cap 5" For Exhaust Stack Pipe Cover Weather Cap Rain cap / weather cap can be used to help prevent dirt, dust, debris, snow, and rain from falling into exposed stack pipes. They are designed to open to full vertical position when pressure is inside the stack. They also close instantly when the exhaust pressure stops. Caps can help allow engines to breathe freely while reducing the threat of damage. They are ideal for trucks, farm and off-road vehicles, and