* Make sure to measure the diameter of your current fuel cap or fuel tank filler neck before placing an order. This non-locking aluminum diesel fuel cap measures 3 1/2 inches with 5.5 TPI NS threads. It features a Viton O-ring for excellent resistance to shrinkage and cracking, along with a stainless steel retaining chain and shackle for added corrosion protection. Approximate dimensions are 3 7/16" through cap threads and 3 1/2" through filler neck threads.

This aluminum fuel cap assembly is designed for diesel trucks, featuring a non-locking and non-vented design for specific tank requirements. It includes a convenient chain to prevent loss and is suitable for use on thermally vented tanks. The cap has a diameter of approximately 3.5 to 4 inches, making it a practical replacement option for various truck models. Its durable construction ensures reliable performance, while the clear "DIESEL ONLY" and "TRUCKS" markings help ensure correct fuel application. This cap provides a secure seal for your fuel tank, offering peace of mind during operation.

• Fuel cap assembly
• Constructed from aluminum
• Non-locking design
• Non-vented
• Includes a securing chain
• Designed for diesel fuel only
• Intended for use on trucks
• For use on thermally vented tanks only
• Approximately 3.5 inches in diameter

SHIPPING INFO: All orders will be shipped via the US Postal Service, FedEx or UPS.
Orders received before 3 p.m.
Eastern Time Monday through Friday (except holidays) will be processed the same day.

International buyers are responsible for all customs charges inclusive of any and all taxes and duties. Please be sure that the item that you are purchasing can be imported into your country. Shipper is not responsible for any delays once the package leaves our facility.

Orders received after 3 PM will be processed the next business day.
Our transportation partners do not process orders on the weekend. Therefore, if you place an order after 3 PM on Friday your order will be processed the following Monday.