Transfer Tank Vented Fuel Diesel Tank Cap, Venting Pressure Fuel Gas Cap for 2 Inch Base for Diesel Transfer Auxiliary Storage Truck Tool Box, Vented Design-Only Include Vented Tank Fill Cap (Black)

▶Product Description◀ Keep your auxiliary diesel tank safe, clean, and properly vented with this 2-inch vented diesel tank cap. Whether you use a transfer tank in your pickup truck, a tool box fuel tank on a flatbed, or a storage tank for your generator or tractor, this heavy-duty metal cap provides a reliable seal while allowing controlled pressure release. ▶Key Features:◀ Venting Function: Prevents pressure buildup and vacuum lock, ensuring smooth fuel flow during transfer or temperature changes. ▶Durable Metal Build:◀ Constructed from high-strength metal with a protective coating to resist rust, fuel corrosion, and impact. ▶Leak-Proof Design:◀ Tight-threaded seal stops fuel slosh, dust, and water from entering your tank. ▶2-Inch Standard Base: ◀ Fills most auxiliary diesel transfer tanks with a 2-inch bung opening. (Not for OEM vehicle fuel tanks – for auxiliary/storage use only.) ▶Easy Screw-On Replacement:◀ No tools needed – simply remove old cap and screw on this vented lid. ▶Note: ◀ This is the top fill lid only – does not include the 2-inch base or tank. Please verify your tank’s fill port size (2 inches) before ordering. Perfect for off-road vehicles, farm equipment, job site transfer tanks, and truck toolbox tanks. Not for use with gasoline.

• Precise 2-Inch Base Fit – Designed specifically for 2-inch fill ports on auxiliary diesel tanks, transfer tanks, truck tool box tanks, generators, tractors, and off-road equipment. (Fill lid only; base not included.)
• Vented Pressure Relief Design – Allows safe venting of fuel vapors and pressure buildup, preventing vacuum lock or tank bulging while maintaining a controlled internal environment for diesel storage.
• Heavy Duty Metal Construction – Made from robust metal with a corrosion-resistant finish (Black coating for the 1-pack), ensuring long-lasting durability in harsh conditions, including outdoor jobsites, farms, and off-road use.
• Leak-Proof Sealing – Engineered to provide a tight, secure seal that prevents fuel spills, dirt, and moisture from entering your auxiliary tank. Keeps your diesel clean and your workplace safe.
• Universal Replacement & Easy Installation – Simple screw-on design for quick replacement of worn or missing caps. Ideal for transfer tanks, storage tool box tanks, pickup truck auxiliary tanks, and fuel caddies. Top cover only – installs in seconds.