Feature 1Fitment: Fuel cap lock is replacement for Peterbilt Semi Truck Models, fit for diesel fuel tank with a 3 1/2in male pipe fill tube, fit for special threaded TPI 5.5 fuel tank port. 2Part Number: Fuel tank filler cap lock replace part number are K071 385 1234, 572.1036, SNV431089 for reference. 3Function: The fuel cap lock keeps your vehicle's fuel tank closed, providing a tight seal, improving fuel economy and reduces vapor emissions. 4Leak Proof: The fuel cap is equipped with a rubber seal to ensure no leakage, bringing you a reliable and safe use experience. 5Precise Material: Fuel tank cover lock is made of premium aluminum alloy, precise, strong, anti oxidation, long service life.Item Type:FuelCapLockMaterial: AluminumalloyReference Part Number:K0713851234,572.1036,SNV431089Application:Fit for a diesel fuel tank with a 3 1/2in male pipe fill tubeFit for a special threaded TPI 5.5 fuel tank portFit for Freightliner before 1984Fit for Kenworth after 1984Fit for Peterbilt Semi Truck before 1980Fit for Western Star before 1983ReplacementforPeterbiltSemiTruckModels .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x FuelCapLock2 x KeysNote1.Please double check the part number of your item, matching information is for reference only.2.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!