4.5" ID to 4" ID - Gloss Black semi you can efficiently upgrade your

you can efficiently upgrade your vehicle’s system without any hassle

Our red powder-coat finish stops before the end of the tubes for better grip ensuring our 4- and 5-ply heavy-duty high-temperature silicone couplers hold tight under high-boost conditions

creates a wind block and also keeps material or cargo from entering the cab

With meticulous design

Integrated clevis reduces suspension-angle stress for improved durability

4.5" ID to 4" ID - Gloss Black semi you can efficiently upgrade yourThis 4 1 2 inch to 4 inch reducing silicone coupler is 3 inches long. Four ply poly reinforced silicone for strength. Perfect for air to air aftercooler systems and turbocharger supercharger connections. Rated at 350 F continuous. Recommended clamps are 94100 0438 on the small end and 94100 0500 on the big end.