This Spectre Intake Coupler is 4 inches on both ends. It comes with two stainless steel worm gear hose clamps. Use it to connect any 4 inch outside diameter component or air intake tube to a 4 inch outside diameter component...

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This Spectre Intake Coupler is 4 inches on both ends. It comes with two stainless steel worm gear hose clamps. Use it to connect any 4 inch outside diameter component or air intake tube to a 4 inch outside diameter component or intake tube. The coupler is not recommended for turbo-charged/supercharged engines.

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