1Applicable Model: The aluminum locking diesel fuel cap is replacement for Freightliner Cascadia. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return. 2OE Number: The part numbers for reference are 0337017002, 0337017002, 600149. Please confirm whether it is consistent with the OE you need to avoid wrong buying and other problems. 3Durable Construction: The locking diesel fuel gas cap is made of high strength aluminum material, lightweight and rust resistant, ensuring excellent performance after long term use and effectively protecting the tank from external damage. 4Perfect Sealing: The locking diesel fuel cap is sealed reliably, can effectively prevent the fuel leakage in the fuel tank and ensure the safety of driving. At the same time, it is shock absorption and durable, and can withstand long term vibration and turbulence, ensuring that it can work normally under bad road conditions. 5Anti Theft: Each fuel tank cap is equipped with two dedicated keys, giving you exclusive access to protect your fuel from fuel theft and damage.