Silver Turbo Sound Whistle Muffler Exhaust Pipe Valve BOV Simulator L For Acura Dodge Cadillac Ford Size Type: L --- Length: 4.38" (11cm) --- Diameter: 1.19" Thread Diameter: 6mm --- Thread Length: 1cm --- Tail Pipe diameter: 44-55 Material: Aluminum --- Displacement : 2000-2400cc Fit Most Automotive, Car, Vehicle with exhaust pipe diameter within 2.5" round. Package includes: 1 x Turbo Sound Simulator Whistle + Set of Mounting Tools