All Fuel Caps
Fuel caps provide a secure seal and quick access for refuelling.
Options include lockable caps, vented caps, and caps with safety chains, these components help prevent contamination and fuel loss across a variety of site and transport tank
Pair with tank vents and protect openings using gaskets.
Fuel Caps Guide
At MAXA Group, we supply fuel caps, also known as fuel tank caps or gasoline caps, for plant machinery and site fuel tanks, giving you a secure seal at the filler neck.
Choose an alloy cap with a safety chain to prevent loss, a fusible cap where fire safety standards require it, or a vented cap for tanks that need pressure equalisation as fuel is drawn off. Locking caps are available where you need to restrict access to the tank.
Check the thread type, BSP or NPT, and the neck diameter against your existing cap before ordering, as fit varies between tank manufacturers. Pair with compartment vents and tank gaskets to keep the whole tank secure. All fuel caps are in UK stock for fast delivery.
Fuel Caps FAQs
What size fuel cap do I need?
Check the thread type, BSP or NPT, and the diameter of your existing cap or filler neck before ordering, as sizes vary between tank manufacturers and models.
What is a fusible fuel cap?
A fusible cap is designed to release at a set temperature in the event of a fire, helping relieve pressure and reduce the risk of a tank rupturing.
Should I use a vented or non-vented fuel cap?
This depends on how the tank is designed to breathe. A vented cap allows air to equalise as fuel is drawn off, while a non-vented cap relies on separate venting elsewhere on the tank. Match the replacement to the type originally fitted.
Why does my fuel cap need a safety chain?
A safety chain keeps the cap attached to the tank while refuelling, preventing it from being dropped, lost or left off after use.
Do you supply locking fuel caps?
Yes. Locking caps are available to help restrict access to the tank, reducing the risk of fuel theft or contamination on site.
Why is my tank losing fuel or letting in water?
A worn cap seal, cross-threaded cap or damaged filler neck can all allow fuel loss or water ingress. Check the cap and neck thread for damage and replace either if the seal no longer sits correctly.
Related Fuel & Water Tank Parts
Browse our related fuel and water tank fittings, all in UK stock for fast delivery.
If you need any help, don't hesitate to contact us, and we'll help to find you the right part, so you can Keep Moving.