LOBIUTIYA 2 Pack 4" Locking Fuel Cap for Peterbilt, Extra Sealing Ring & Dust Covers&Aluminum Diesel Fuel Tank Cap with Key for Peterbilt 379 386 389 579, Replace 11-04859-10011-04859-200 600212

["Heavy Duty Locking Diesel Fuel Cap for Semi Truck: Designed as a reliable locking diesel fuel cap for semi truck fuel tank systems, this 4 inch fuel tank cap provides a tight seal to help prevent fuel leakage and contamination, ideal truck fuel cap replacement for heavy duty applications.","Compatible with Peterbilt Trucks (Wide Fitment): This fuel cap compatible with Peterbilt models 330, 335, 337, 340, 348, 352, 357, 359, 362, 365, 367, 375, 377, 378, 379, 386, 389, 579, 587 1997-2017, designed for proper fit and easy installation.","Replace OE Part Numbers (Direct Replacement): Direct replacement fuel cap for 11-04859-100, 11-04859-200, 600212, 572.1015, featuring a lever locking fuel cap design with built-in pressure relief and non-vented structure for stable performance.","Durable Die-Cast Aluminum Construction: Made of corrosion-resistant die-cast aluminum fuel cap, this heavy duty fuel tank cap withstands harsh weather, road salt, and extreme conditions, more durable than standard plastic diesel fuel caps.","Extra Sealing Rings, Dust Covers & 2-Year After-Sales Support:Includes additional 0.19\" thick NBR rubber sealing rings for improved sealing performance, helping reduce fuel leakage and odor, along with dust covers to keep debris out. Also comes with key identification stickers for easy key matching. Backed by 2-year after-sales support for added confidence and long-term use.","Ideal Replacement for Worn or Damaged Fuel Caps: Replace your old fuel cap if you notice fuel odor, leakage, loose fit, cracked seals, or difficulty locking. This locking diesel fuel cap helps restore a secure seal, improve safety, and ensure reliable performance for your semi truck.","What’s Included: 2 locking diesel fuel caps (4\" lever-style), 2 dust covers, 2 extra NBR oil-resistant rubber sealing rings, 13\" safety chains, 4 keys, and key identification stickers for easy key matching and enhanced fuel system protection"]