Best Natural Gas Conversion Options for Generators in 2026
Finding the right natural gas conversion kit for a generator depends on your model, fuel flexibility needs, and installation constraints. The top picks below cover common generator brands and offer low-modification installation with gasoline retention. They are best for homeowners, RV users, and emergency backup planners seeking reliable natural gas operation without full system overhauls.
Summary of selected products:
| Product | Best For | Key Benefit |
|---|---|---|
| Natural Gas Conversion Kit for Duromax XP12000EH | Duromax XP12000EH owners | Low-pressure natural gas inlet; preserves gasoline option |
| YAMAKATO Tri Fuel Carburetor Kit | Multi-model compatibility | Tri/fuel capability for several popular brands |
| Natural Gas Conversion Kit for Westinghouse WGEN9500DF | Westinghouse users | No permanent modification; gasoline option retained |
| Nashfuel Tri-Fuel Conversion Kit for GP5500 | GP5500 and similar models | Venturi design enables non-modified installation |
| Hutch Mountain Tri-Fuel Conversion Kit for Honda EU2200i | Honda EU2200i owners | Clean energy option with RV/home applicability |
Natural Gas Conversion Kit for Duromax XP12000EH
Designed for the Duromax XP12000EH, this kit uses an existing carburetor port for the natural gas inlet and requires no permanent modification. It preserves the ability to run on gasoline, and switching back to propane is accomplished by reconnecting the stock propane hose. Best for Duromax XP12000EH owners who want low-effort natural gas conversion while maintaining quick access to gasoline fuel.
Who it’s best for: homeowners with a Duromax XP12000EH who want a straightforward, reversible natural gas option without altering core engine components. Limitation: only stated as compatible with the XP12000EH model, so compatibility with other Duromax or similar engines isn’t specified here.
YAMAKATO Tri Fuel Carburetor Kit
This carb kit targets a broad range of engines from 196cc to 224cc and several clone models, enabling tri-fuel operation (gasoline, natural gas, propane). It includes non-asbestos mounting gaskets and supports multiple brands, including Generac, Champion, and Honda GX-series units. Best for: users with one of the listed displacement ranges who want flexible fuel options in a single kit. Caution: the listing indicates extensive compatibility with many models; verify your exact generator model and displacement before purchase.
Natural Gas Conversion Kit for Westinghouse WGEN9500DF
This kit uses the carburetor’s existing natural gas inlet port, leaving gasoline operation intact. It allows for a simple switch back to propane by reconnecting the stock propane hose. Best for: Westinghouse WGEN9500DF owners who want a reversible, low-modification natural gas upgrade. Limitation: product details emphasize compatibility with a subset of Westinghouse models; confirm fit for your exact WGEN9500DF configuration.
Nashfuel Tri-Fuel Conversion Kit for GP5500
Designed for GP5500 generators, this kit supports low-pressure natural gas, low-pressure propane, and gasoline. It features a unique venturi design that allows installation without major modifications on many generators, with an inlet pressure requirement of 9-13.8″wc. Best for: GP5500 users seeking a non-invasive, flexible fuel solution. Caution: verify inlet pressure compatibility with your exact model and local gas supply characteristics.
YAMAKATO 389cc–459cc Tri Dual Generator Carburetor Kit
This multi-engine kit covers a wide range of displacements (301cc to 459cc) and supports gasoline-to-LPG/LNG/CNG transitions. It includes non-asbestos mounting gaskets and is positioned as OEM-quality for several Generac, Champion, and Honda or clone models. Best for: users with a 300–460cc displacement generator seeking broad compatibility. Limitation: the listing indicates many supported models; double-check your exact engine family and model number for compatibility.
GasXpert 24FT Natural Gas Hose Kit
GasXpert offers a 24-foot natural gas hose with 1/2″ ID and brass fittings, including quick connect and disconnect hardware. It’s designed to connect outdoor appliances to a home natural gas supply, with a 3/8” female flare to 1/2” male flare adapter for broader use. Best for: users needing a flexible, durable gas hose to enable natural gas fueling for generators and other appliances. Caution: this is a hose kit rather than a full carburetor conversion; ensure your carburetor is compatible with the hose arrangement.
Hutch Mountain Tri-Fuel Kit for Honda EU2200i
This kit provides true tri-fuel flexibility for Honda EU2200i, enabling gasoline, propane, and natural gas operation. It emphasizes cleaner energy options and longer-term fuel stability, with a 10-foot patch hose and regulator bracket for quick setup. Best for: Honda EU2200i users seeking robust fuel flexibility for home backup, RVs, or camping. Caution: ensure the EU2200i’s intake configuration aligns with the kit’s mounting and hose routing for a safe fit.
Buying Guide
What to consider when choosing a natural gas conversion kit:
- Generator compatibility: Verify your model, displacement, and whether the kit explicitly supports your brand and series. Some listings target broad ranges, while others are model-specific.
- Modification vs. plug-and-play: Some kits require minimal or no permanent modification; others may involve more involved changes. Decide based on whether you want reversible options.
- Fuel flexibility: If you want tri-fuel capabilities, prefer kits marketed as tri/fuel or dual-fuel with natural gas support. Check if the kit includes all necessary gaskets and mounting hardware.
- Gas inlet configuration: Look for kits that use existing carburetor ports for natural gas and preserve gasoline operation. This reduces risk and simplifies switching fuels.
- Inlet pressure requirements: Low-pressure natural gas is common, but confirm compatible inlet pressures (e.g., 9–13.8″ wc for some Nashfuel kits) to avoid performance issues.
- Installation considerations: Some kits include hoses, brackets, and gaskets; others may require additional adapters. Ensure you have the proper fittings for your setup.
- Safety and compliance: Use kits that provide robust fittings and flame-retardant materials, and ensure connections are leak-tested after installation.
FAQ
- Can I switch between natural gas and gasoline quickly? Yes, if the kit is designed to preserve gasoline operation and uses a simple reconnection of the stock fuel hose.
- Do these kits require permanent modification? Some kits require none or minimal modification, while others may need more extensive adjustments. Check the product details for your model.
- Is a true tri-fuel system necessary for all users? Not for everyone. If you only use natural gas, a dual-fuel or natural gas–specific kit may suffice; tri-fuel adds flexibility for varied fuel sources.
- Will these kits fit all generators from the listed brands? Compatibility varies by model and displacement. Always verify model compatibility before purchase.
- What safety steps should I take after installation? Check for leaks with soap solution, ensure hoses and fittings are secure, and consult a professional if you’re uncertain about high-pressure gas connections.
- Do these kits include mounting hardware? Some kits come with gaskets and mounting hardware; others list components separately. Review the features to confirm included parts.