sthus 4L Replacement Petrol Fuel Tank for 49cc–80cc Motorized Bicycle — Threaded Petcock & Cap Switch Included

sthus 4L replacement petrol tank is a direct-fit fuel reservoir and hardware kit designed to revive 49cc, 60cc and 80cc motorized bicycle engines with a 4-liter capacity and threaded petcock for fast swap-outs.

If your motorized bicycle’s original tank is cracked, leaking, or missing fittings, this sthus 4L fuel tank kit provides a ready-to-install replacement. Manufactured to match common 49cc–80cc engine mount points, the set includes the tank, cap, and a cap switch so you can install and refuel without hunting for extra parts. The externally threaded tank and petcock simplify replacement of the old fuel valve, and the package is intended as a direct substitute for original equipment on compatible models.

Will this tank fit my 49cc, 60cc or 80cc motorized bicycle?

Compatibility is driven by engine size and mounting geometry; this tank is made for popular 49cc, 66cc and 80cc motorized bicycle setups but you should confirm dimensions and mounting points before buying.

• Designed for 49cc, 66cc (often listed as 60cc), and 80cc engines.
• Externally threaded tank and petcock match many standard replacement valves.
• Check bolt spacing and filler orientation against your current tank.
• Contact sthus with measurements if you need fit guidance.

What components come in the box and what do they do?

The kit includes the main petrol tank plus related fittings so you can complete the swap without buying extra pieces. Each item is intended to replace worn or missing parts from original equipment.

• 1 x 4L petrol tank — primary fuel storage.
• 1 x fuel tank cap — seals the filler to prevent spills and contamination.
• 1 x cap switch — allows a wired fill-level or safety connection where applicable.
• Externally threaded petcock-ready neck — makes installing or changing the fuel valve straightforward.

How do I install the replacement tank and petcock?

Installation is typically straightforward for anyone with basic mechanical skills; you’ll remove the old tank, transfer any reusable fittings, and mount the new tank using the bike’s existing brackets and fuel line. Always work in a ventilated area away from ignition sources.

• Drain and disconnect old tank, then remove mounting fasteners.
• Fit new tank into mounts and tighten bolts to factory torque where provided.
• Attach the externally threaded petcock or your existing valve; secure fuel lines and test for leaks.
• Reconnect cap switch wiring if your system uses it, then test run for proper fuel flow.

Who is this for? Riders, DIY mechanics, and repair shops that maintain motorized bicycles with 49cc–80cc engines will find this sthus 4L petrol tank useful when replacing damaged or missing fuel tanks. It’s aimed at customers who want a close-to-OEM replacement that includes the cap and cap switch so the repair can be completed in one visit. If you need absolute fit confirmation, compare your old tank’s mount points and petcock thread to ensure compatibility before purchase.