4" ID to 3" ID X 6" Long reducing coupler - Gloss BlackThis 3 inch to 4 inch reducing silicone coupler is 6 inches long. Rated at 350 F continuous. Perfect for air to air aftercooler systems and turbocharger connections. Recommended clamps are 94100 0338 on the small end and 94100 0438 on the big end.
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4" ID to 3" ID X 6" Long reducing coupler - Gloss Black