Explore a versatile collection of Freightliner FLC120 fuel tank caps designed to keep your truck running smoothly. This product lineup features a wide range of products, including chrome plastic non-locking caps, 3-inch female vented locking caps, replacement leak defender caps, and brass non-vented caps. Keep your fuel tank secure and prevent leaks with these high-quality, durable fuel tank solutions. Whether you need a basic replacement or an advanced anti-siphon system, you'll find the perfect cap for your Freightliner FLC120 truck. Upgrade your rig with these essential fuel tank accessories and ensure reliable, leak-free performance on the road.