Elevate your semi-truck with the comprehensive selection of Peterbilt 388 fuel tank caps. From locking and non-vented options to anti-siphon and pressure relief designs, this product lineup offers a variety of caps to meet your truck's specific needs. Ensure a secure and reliable fuel system with premium components engineered for optimal performance and safety. Whether you're seeking a replacement cap or aiming to upgrade your Peterbilt 388, you'll find the perfect solution to keep your rig running smoothly. Explore our top-quality fuel tank caps and accessories to enhance the functionality and appearance of your Peterbilt 388 today.