Material: RubberFeature:Type: Heater Bypass HoseOur hose goes on your LS water pump and loops the heater hose lines.Great for deleting the heater on your LS swapped vehicle.One end is 5/8" and the other is 3/4"Fitment: Fit For All LS or LT series engines from 1998 and newerPacakge Included: 1pc Heater Bypass Hose