Browse the International ProStar Fuel Tank Caps category for various high-quality fuel caps and accessories. This selection includes non-locking, locking, vented, and non-vented caps made from aluminum and brass to keep your fuel system secure and leak-free. These caps are designed to fit various thread sizes and accommodate different semi-truck models, including International, Kenworth, and Volvo. The category also offers replacement gaskets, collars, and O-rings to ensure a proper fit and maintain fuel system integrity. Whether replacing a worn-out cap, upgrading to a locking model, or maintaining your fuel system, this category has the right solutions. Built for durability and compatibility, these components keep your rig running smoothly on the road.