4" ID to 3.63" ID Coupler - Gloss Black

Diesel Freak Verified independent store

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This 4 inch to 3-5/8 inch reducing silicone coupler is 3 inches long. Four-ply poly reinforced silicone. Perfect for air-to-air aftercooler systems and turbocharger/supercharger co nnections. Fits on some LS1 MAF's.Rated at 350 F continuous. Recommended clamps are 94100-0400 for the 3-5/8" end and 94100-0438 for the 4" end. Show more