Introducing the Freightliner SD 108-122 Fuel Tank Caps product lineup - your one-stop-shop for all your semi-truck fuel tank cap needs. Whether you're looking to replace a worn-out cap, upgrade to a more secure locking option, or add an anti-siphon tube, this product lineup has a diverse selection to choose from. Key features of the Freightliner SD 108-122 Fuel Tank Caps include heavy-duty construction, advanced locking mechanisms, and innovative designs to prevent fuel leaks and theft. Many models also offer vented options for improved airflow and functionality. Customers can find non-vented, locking, and locking vented caps to suit their specific truck requirements. The benefits of investing in a quality fuel tank cap are numerous. A proper fitting, secure cap helps maintain fuel system integrity, maximizes fuel efficiency, and deters would-be thieves. By upgrading to a Leak Defender or CSM model, you can enjoy added peace of mind on the road. Whether you operate a fleet or own a single semi-truck, the Freightliner SD 108-122 Fuel Tank Caps product lineup has the high-performance, durable solutions you need to keep your truck running strong. Browse the selection today and find the perfect replacement or upgrade to keep your fuel secure and your truck moving forward.