Keep your fuel secure and your rig running strong with our high-quality fuel tank caps. Whether you need a leak-proof replacement or a locking cap for extra security, we've got durable options in brass and aluminum. Choose from vented or non-vented designs, all compatible with top truck brands like Freightliner, Sterling, and Western Star. Upgrade your fuel system with a reliable, long-lasting cap that keeps you on the road without worry!