Billet LS 92mm 3 Bolt Intake to 102mm 4 Bolt Throttle Body LS1 Truck Adapter USABillet LS 92mm 3 Bolt Intake to 102mm 4 Bolt Throttle Body LS1 Truck Adapter USA Easily add a 102mm, 4 bolt throttle body to your 3 bolt Intake manifold with this high flow adapter Has 92mm through hole, tapered to 102mm for the throttle body Features a 3D machined center for maximum air flow Works with both DBW and DBC throttle bodies