Mustang Nova Corvette Jeep AMC Datsun BMW Audi Dodge Radiator Cap SP 12 NOS This is a New & Perfect Stant SP12 14 LBS Lever Vent Radiator Cap. It fits 3/4" Deep Neck Radiators.The Lever Vent is a Safety Feature so you don't get Hot Antifreeze Splashed on you when removing the cap.The Complete Application Chart and Cap Sizes is in the Photo Section.Thanks, Jack