4" ID Cobra Head - Rubber 4x Experience the joy of driving

Experience the joy of driving with this 5

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4" ID Cobra Head - Rubber 4x Experience the joy of drivingCobra head elbows are used when clearance is extremely limited, such as when an air cleaner outlet is up against a firewall. There is no other way to make a really tight bend without losing air flow. How does the cobra head make such a tight bend without increasing turbulence? Because it flares out (see pictures), creating more volume internally without increasing height. Use a cobra head anywhere a standard or short radius elbow will not fit. Temp