Locking Fuel Cap (1PCS), Compatible with Kenworth Peterbilt Freightliner Western Star, 3 1/2 Course Thread, 5.5 TPI Vented, Semi Truck Diesel Fuel Tank Locking Gas Cap | Replaces# 572.1036 SNV431089 - Gledewen, PJ06-P1

• 【OEM Fit】Our locking fuel tank caps have undergone a rigorous testing, state of the art manufacturing to OE specifications for a precise fit. Diesel gas caps have been taken 100% inspected and tested multiple times before the shipment. 【Upgraded Design】Long life-span matters, that is why all of our fuel tank locking caps are designed to save customers money and time by providing high-quality aluminum alloy. Our semi truck gas caps are suitable for diesel fuel cap with 3 1/2" fill tube, suitable for fuel tank ports with special thread TPI 5.5. 【Fits For】Freightliner before 1984, Kenworth after 1984, Peterbilt before 1980, Western Star before 1983. Replacement OE Number 572.1036, SNV431089, K071-385-1234. Please measure the diameter of your fuel tank fill tube prior to ordering. 【Anti-Leakage and Anti-Theft】The diesel fuel cap lock is equipped with a rubber sealing ring to ensure no oil leakage. Vent cap design: Lock fuel tank cap with the exhaust port and pressure relief cap to regulate the internal pressure of the system and improve safety (only for semi truck diesel fuel tank). This automotive replacement fuel tank cap is designed to prevent diesel theft, safety chain and sling to prevent loss of fuel cap when refueling. 【60-Month Warranty】Be confident purchase the Kenworth accessories. If the fuel tank lock fails, cracks, stops working or any other problems, please contact us through amazon message directly. We offer a 5-year warranty, 100% satisfaction guarantee. 【Install Caution】When installing the new Freightliner accessories,please clean the threaded part, cover the fuel tank port to prevent impurities from entering the fuel tank, and finally tighten the fuel tank cap after thorough cleaning to prevent leakage.