HZ Gas Fuel Tank for Honda GX240–GX420 Engines (8–16HP) — Direct-Fit Replacement with Hardware Kit

HZ gas fuel tank is a direct-fit replacement fuel tank and hardware kit for Honda GX240, GX270, GX340, GX390 and GX420 engines and compatible clones.

This replacement tank restores fuel capacity and correct mounting for small horizontal OHV engines used on pressure washers, water pumps, compressors, log splitters and more. Built to match the shape and mounting points of common Honda part numbers, the unit is supplied with the mounting bolts, fuel line, clips, fuel joint and gaskets you need to swap tanks quickly and get equipment back in service.

Which engines and part numbers will this HZ tank replace?

The HZ tank is designed to fit Honda GX240, GX270, GX340, GX390 and GX420 engines and many Chinese Honda-clone OHV engines (173F, 177F, 182F, 188F, 190F, 192F). It corresponds to numerous OEM part numbers for GX-series tanks.

• Compatible with Honda 8HP–16HP series: 240cc–420cc engines.
• Replaces Honda part numbers such as 17510-ZE3-020ZA and related variants.
• Works with many clone engines and aftermarket 389cc–420cc units.

What comes in the kit and how does it simplify installation?

The package contains the tank plus all the hardware and consumables needed for a standard replacement, so you won’t need to source separate gaskets or clips.

• Includes mounting bolts, nuts, and fuel line with clips.
• Supplies a fuel joint, muffler gasket and valve cover gasket for reassembly.
• Pre-drilled mounting locations match OEM points for a straightforward swap.

What applications and equipment use this gas tank?

These GX-series engines power a wide range of professional and homeowner equipment. The HZ tank is suitable for repair or restoration of many common machines.

• Pressure washers (including units rated around 3800–4400 psi from popular brands).
• Water pumps (WT30/WT40 style), air compressors, log splitters, chippers and tillers.
• Compatible with equipment models that accept GX240–GX420 engine packages and many aftermarket clones.

Is the HZ replacement tank durable and what should I expect from fitment?

The tank is manufactured to match the form and mounting of the original Honda tanks; you should expect reliable fit and function when installed correctly. Use the included gaskets and hardware to avoid leaks and ensure secure attachment.

• Constructed and finished to OEM-style dimensions for accurate fitment.
• Comes with gaskets and clamps to reduce risk of fuel leaks after installation.
• Test-fit before final tightening to confirm alignment and fuel line routing.

Who this is for: Mechanics, rental shops and DIY owners who need a dependable, drop-in replacement fuel tank for GX-series engines or compatible clones. If you are repairing a pressure washer, water pump, compressor or other power equipment that uses Honda GX240–GX420 engines and you want a complete hardware-inclusive kit to restore fuel delivery, this HZ assembly provides the parts and compatibility to get the job done quickly.