PETKAO NG to LP Conversion Kit for Weber GS4 Genesis II & Spirit II — Brass Orifices & Regulator Hose

PETKAO’s NG to LP Conversion Kit converts compatible Weber GS4 Genesis II and Spirit II natural-gas-ready grills to reliable propane operation with a complete set of brass orifices, fittings, hose and tools.

If you own a Weber Genesis II, GS4 Genesis or Spirit II series grill built for natural gas but want the convenience of propane, this conversion kit supplies the parts and adaptors to make the switch at home. The PETKAO kit was designed to fit a wide range of Weber model families — including Genesis Silver/Gold/Platinum lines, Genesis 1000 series, and many Spirit II parts — and includes multiple orifice sizes so you can match BTU output and maintain stable flames. All components are brass, steel or heavy-duty rubber for durability and safe fuel flow.

Which Weber models will this PETKAO conversion kit work with?

The kit is compatible with numerous Genesis and Spirit models across several model years. It covers GS4 Genesis II S/E/LX/LXS/LXE variants, many Genesis Silver/Gold/Platinum submodels, Genesis 1000-series grills, and Spirit II models like 210/310/315. Always cross-check your model and burner layout before ordering.

• Fits Genesis II S/E-210/310/315/325/330/335/345/410/435/610 and similar.
• Compatible with Genesis II LX/SX/EX/LXS/LXE families and CE/CEP/EP variants.
• Works with Spirit II 210/215/310/315 and many Spirit-series configurations.
• Includes multiple orifices to adapt to different burner sizes and BTU ratings.

What parts are included and how do they help the conversion process?

The PETKAO kit provides every basic component needed to convert from natural gas to propane without sourcing extra parts. The included hose, fittings and drill-matched orifices let you tune each burner to the appropriate propane flow for consistent heat across the cooktop.

• 5-foot propane regulator hose for safe, flexible fuel connection to the grill.
• Fourteen hand-drilled LP orifices in three sizes to match different burner holes.
• Two types of 3/8" fittings and sealing tape for leak-free connections.
• Wrench and instructions to simplify removal and replacement of orifices and adapters.

How safe and durable is the PETKAO conversion kit?

Safety and longevity are primary design points: brass orifices resist corrosion, rubber hose material withstands outdoor use, and fittings are machined for secure jointing. Proper installation and pressure checks are essential; always test for leaks and follow your grill manufacturer’s guidance.

• Solid brass orifices and fittings minimize wear and maintain consistent gas flow.
• Sturdy rubber hose rated for propane and a regulator for correct pressure control.
• Sealing tape and a wrench included to help ensure tight, leak-free assemblies.
• Installation requires basic tools and following leak-test procedures for safety.

How does this conversion affect grilling performance and flame control?

Switching from natural gas to propane changes source pressure and BTU delivery; matching orifice size restores predictable heat and flame stability. With the right orifices installed, you’ll get even burner output and fewer cold zones — useful for searing, slow roasting or everyday grilling.

• Precision orifices help maintain intended BTU output per burner for consistent cooking.
• A regulated propane supply ensures steady flame heights and reduced flare-ups.
• Ability to tune individual burners improves temperature uniformity on the grates.
• Designed to protect the grill’s valves and components when switching fuel types.

Who is this for: PETKAO’s NG to LP Conversion Kit is intended for homeowners and backyard cooks who own a Weber Genesis II/GS4 or Spirit II model configured for natural gas but prefer the portability or availability of propane. It’s best suited to users comfortable with basic mechanical work and leak testing, and who want a cost-effective, durable kit with multiple orifice options to restore even grill performance on propane.