Amazon.com: Squirrelly 4' to 3' Inch Silicone Black ...
3.5 to 4 inch Silicone Reducer Straight Coupler Hose,ID 4″ to 3.5″(102-89mm),Length 3″(76mm),4-Ply Reinforced Turbo/Intercooler/Intake Piping Reducer Coupler Industrial Hydraulic Hoses (89-102, Black)
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