Home / ECS Supercharger Kit Parts / 2005-07 Corvette LS2 / Ducting IC to TB / ECS 3.75" to 4.00" Silicone Hose Reducer Coupler ECS 3.75" to 4.00" Silicone Hose Reducer Coupler$15.00 ECS 3.75″ to 4.00″ Silicone Hose Reducer Coupler In stock Buy now SKU: ECS-100-218-375 Categories: Ducting IC to TB, Ducting IC to TB Product ID: 18659 Description Additional information Description ECS 3.75″ to 4.00″ Silicone Hose Reducer Coupler: Additional information Weight 1 lbs Related products ECS C5 Std Charge Tube Polished IC to TB $129.00 Buy now 3.75" HD T-Bolt Clamp $10.00 Buy now ECS Intake Charge Duct – Corvette C6 LS2 Black $129.00 Buy now 4.00" HD T-Bolt Clamp $10.00 Buy now