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The Skunk2 84–90mm big-bore throttle body cold-air intake coupler adapts a 84mm intake opening to a 90mm throttle body, enabling installation of Skunk2 '06–'11 Civic Si Cold-Air Intake systems when using a Pro Series or similar throttle body. Also compatible with the OEM TL throttle body, this silicone coupler replaces the factory piece for a factory-like fit when upgrading intake components.
Skunk2 07-11 Honda Civic Si Big-Bore Throttle Body Cold-Air Intake Coupler (84mm to 90mm)
