Best Gasoline To Propane Conversion Kit For Generator

#1 · Best Overall

1. Hipa GX390 Tri-Fuel Carburetor

Best for: GX390 multi-fuel conversions.

Why it ranks #1: It explicitly supports gasoline, LPG and CNG, fits Honda GX340/GX390 engines and clones, and lists Champion and Predator applications.

A three-position rotary switch with an OFF setting gives this Hipa kit a clear fuel-control step, while its conversion supports gasoline, propane, and natural gas. That combination suits GX340/GX390 owners seeking multiple fuel choices for residential backup power or camping, with a manual choke lever included for cold starts.

Compatibility covers Honda GX340 and GX390 engines and clones, plus listed Champion generator sizes and Predator 700, giving owners of those engines a defined starting point for fit. The LPG/CNG conversion components and included gasket support the fuel-system change, while the three-position switch lets the operator select a fuel position or OFF. A manual choke lever is specified for cold starts. This is a replacement-carburetor-style kit, so confirm the generator’s engine family against the listed compatibility before installation.

Skip it if you need a kit specifically listed for a Honda EU2200i; Hutch Mountain’s EU2200i kit is explicitly matched to that generator.

GX340/GX390 and compatible-clone owners who want gasoline, LPG, and CNG options for backup power or camping are the intended buyers. Check the engine family carefully, since the compatibility list covers several generator brands and sizes.

Listed on Amazon as: HIPA 389cc 420cc Tri Dual Generator Carburetor Propane Conversion kit for Champion Predator Generac Honda OHV Engine 338cc 389cc 420cc 460cc GX340 GX390 GX420 GX460 Portable Generator

#2 · Best Complete Kit

2. Grenergy EU2200i Tri-Fuel Kit

• Output Wattage: 1800
• Warranty Description: 1 Year Limited Warranty from Date of Purchase

Best for: EU2200i no-carb-mod tri-fuel.

Why it ranks #2: The kit is specified for Honda EU2200i, Co-Minder, Companion and EB2200i, supports three fuels, and includes a regulator assembly and quick-connect adapter.

No modification to the factory carburetor is the defining installation claim of this Grenergy kit, enabling a bolt-on tri-fuel conversion for listed Honda EU2200i generators. It arrives preset to run on propane and supports gasoline, propane, and natural gas, with a complete-kit claim for the conversion.

Grenergy lists compatibility with Honda EU2200i, Co-Minder, Companion, and EB2200i models, giving several specific generator targets for fit checks. Its regulator assembly and fuel adapter assembly with quick connect are included, and the listing says no additional hose or add-on kits are needed. The kit is preset for propane and is described as requiring no factory-carburetor modification, which can simplify the stated conversion workflow. Tri-fuel operation adds gasoline and natural gas alongside propane; the listed output is 1800 watts.

Skip it if you need a kit for an EU2000i; Hutch Mountain’s EU2000i Tri-Fuel Conversion Kit is specifically listed for that generator.

Owners of the listed Honda EU2200i family models who want tri-fuel operation without factory-carburetor modification are the intended buyers. Check that your exact generator version appears in the compatibility list before selecting it.

Listed on Amazon as: EU2200i Propane, Natural Gas & Gasoline Tri Fuel Conversion Kit for Honda Generator Inverter LPG CNG

#3 · Best Dual-Fuel Fit

3. Hutch Mountain EU2200i Dual-Fuel Kit

• Output Wattage: 2200 W

Best for: Honda EU2200i fuel flexibility.

Why it ranks #3: This kit names the Honda EU2200i and supports gasoline and propane, making it a direct match for owners who do not need natural gas.

Honda EU2200i compatibility is the defining feature of this Hutch Mountain kit, enabling that portable generator to run on gasoline or propane. Its 2200-watt output specification and included fuel adapters make it a candidate for EU2200i owners preparing for residential backup, RV use, or camping.

The kit is specified for Honda EU2200i portable gas generators, which gives owners of that model a clear compatibility target rather than a broad engine-family list. Its two stated fuel options—gasoline and propane—allow a change in fuel source when preparing for home backup or outdoor use. Fuel adapters and a manual are included, supporting the conversion workflow. The listing also specifies 120 volts and 2200 watts output; those figures describe the listed product, not a guaranteed generator output after conversion.

Skip it if you need natural-gas operation for an EU2000i; Hutch Mountain’s EU2000i Tri-Fuel Conversion Kit adds natural gas as a fuel option.

EU2200i owners seeking gasoline-or-propane flexibility for home backup, RV setups, or camping are the clearest fit. Choose it with the two listed fuel options in mind; the product information does not specify natural-gas operation.

Listed on Amazon as: Hutch Mountain Generator Propane Conversion Kit for Honda EU2200i

#4 · Broad Engine Fit

4. YAMAKATO GX390 Tri-Fuel Carb Kit

Best for: Broad GX-clone carburetor fit.

Why it ranks #4: Its listed range spans 301cc to 459cc and includes multiple GX engines, while compatibility names Generac, Westinghouse and Firman models.

A broad engine-displacement and generator compatibility list is the key feature of this YAMAKATO manual carburetor kit, enabling LPG or natural-gas conversion across many listed GX-style engines. It names Honda and clone engines from 301cc through 459cc and several generator families, including Generac and Firman.

The manual carburetor kit is listed for Huayi P27-3DL and Honda/clone GX engines across multiple displacement sizes, giving owners several stated fit references to check. Its LPG/CNG conversion purpose allows gasoline generators to use alternative gas fuels, while the included non-asbestos mounting gaskets support the carburetor replacement installation. The listed generator applications include Generac, Firman, and Westinghouse examples. Because the compatibility spans many models and engine sizes, matching the existing engine and carburetor family to the listing matters before beginning the swap.

Skip it if you need a kit specifically listed for a Honda EU2200i; Hutch Mountain’s EU2200i kit names that generator directly.

Owners of listed GX-style engines or compatible Generac, Firman, and Westinghouse generators seeking LPG/CNG conversion are the target buyers. Treat the extensive application list as a fit-check reference, not a substitute for matching the engine.

Listed on Amazon as: YAMAKATO 389cc 420cc Tri Dual Generator Carb Gas to LPG CNG Conversion

#5 · Predator-Specific Fit

5. Cirecsiy Predator Tri-Fuel Kit

• Output Wattage: 4000 W

Best for: Predator 3200/4000W tri-fuel.

Why it ranks #5: Designed for Predator 3200W or 4000W generators, it supports gasoline, propane and natural gas and includes a regulator, hose and fittings.

Compatibility with Predator 3200W and 4000W generators sets this Cirecsiy kit apart, enabling those gasoline models to use propane or natural gas as well. Its tri-fuel setup gives owners a choice among three fuels for backup power, camping, RV use, or off-grid applications.

The kit names Predator 3200W and 4000W portable generators as its fit, making model matching central to the buying decision. Its carburetor adapter, fuel regulator, hose, clamps, and fittings provide the listed components for a fuel-system conversion, rather than requiring the buyer to source each of those items separately. After conversion, the generator can use gasoline, propane, or natural gas. That range can help owners choose a fuel based on the situation, though installation still involves the supplied conversion components.

Skip it if you own a Honda EU2200i; Grenergy’s EU2200i tri-fuel kit is listed for that model and its Companion version.

Predator 3200W or 4000W owners who want gasoline, propane, and natural-gas choices for backup or outdoor power are the intended buyers. Keep the named Predator generator models as the key fit boundary.

Listed on Amazon as: Propane Conversion Kit for Predator 3200/4000W Generator – Tri‐Fuel LPG/NG Carburetor Adapter for Gasoline Portable Generator

#6

6. KELKONG GX390 Dual-Fuel Kit

• Warranty Description: 1 year manufacturer

Best for: GX340/GX390 LPG and NG.

Why it ranks #6: It targets Honda and clone GX270/GX340/GX390 engines and names several Generac and Westinghouse models, with a carburetor and gaskets included.

Compatibility across Honda and clone GX engines from 301cc to 459cc is the defining scope of this KELKONG carburetor kit, enabling LPG or natural-gas conversion for a range of listed generators. Its stated applications include several Generac and Westinghouse models alongside GX270, GX340, and GX390 engine families.

The listing identifies GX270, GX340, and GX390 engines and multiple 182F–192F displacement families, plus named Generac and Westinghouse generator models. That broad compatibility gives owners several references to compare with their current engine before replacing the carburetor. The included damper handle, screw, and gasket support the listed carburetor assembly, while the LPG/NG designation identifies the alternative fuels. The supplied information describes the kit as a carburetor replacement, so matching the engine family remains central to the installation decision.

Skip it if you need gasoline, propane, and natural gas from one kit; YAMAKATO’s listed manual carb kit supports tri-fuel or dual-fuel use.

Owners of listed GX-series engines and compatible Generac or Westinghouse models seeking LPG or natural-gas conversion are the target buyers. Verify the engine family carefully, and note the listing does not specify gasoline conversion.

Listed on Amazon as: GX340 GX390 Carburetor LPG/NG Dual fuel Conversion Kit 188F

#7

7. Hutch Mountain EU2000i Tri-Fuel Kit

• Output Wattage: 3000
• Warranty Description: No

Best for: EU2000i tri-fuel conversion.

Why it ranks #7: This Honda EU2000i-specific kit adds propane and natural gas to gasoline operation and includes a 10-foot patch hose and regulator bracket.

Gasoline, propane, and natural-gas operation gives this Hutch Mountain kit its clearest advantage for Honda EU2000i owners, enabling three fuel choices for backup power, RV setups, and outdoor trips. The included 10-foot patch hose and regulator bracket also make the supplied installation components more specific.

The kit is identified for the Honda EU2000i and supports gasoline, propane, or natural gas, making it a model-specific option for owners seeking tri-fuel capability. Hutch Mountain says propane and natural gas can reduce fuel-storage concerns and maintenance associated with gasoline, including clogged carburetors and ethanol gum buildup. The included 10-foot patch hose and regulator bracket provide named components for the conversion workflow. The listing also marks it portable and recommends it for camping and residential use.

Skip it if you own an EU2200i rather than an EU2000i; Grenergy’s kit is listed for EU2200i and Companion models.

Honda EU2000i owners wanting three fuel choices for residential backup, RV use, or camping are the intended buyers. The specific EU2000i fit and included hose and bracket make model matching the key boundary.

Listed on Amazon as: Hutch Mountain Generator Tri-Fuel Conversion Kit for Honda EU2000i

#8

8. IDEASHIP EU2200i Tri-Fuel Kit

• Output Wattage: 1800 W
• Warranty Description: 3 Year Manufacturer

Best for: EU2200i emergency fuel options.

Why it ranks #8: It specifies Honda EU2200i compatibility and gasoline, propane and natural gas operation, but its listed included components provide less fitment detail.

Three-fuel operation is the central promise of this IDEASHIP conversion kit, enabling a compatible Honda EU2200i generator to use gasoline, propane, or natural gas. The listing positions it for family emergencies, RVs, and camping, where having multiple stated fuel choices can add flexibility.

The product description names gasoline, propane, and natural gas as supported fuels, giving EU2200i owners three alternatives for emergency or outdoor power. Its stated compatibility with the Honda EU2200i provides a specific generator target, while the listed 1800-watt output is a useful specification to note when considering the application. The kit’s included components are described only as a generator propane conversion kit, so the listing gives less detail about individual installation hardware than some conversion kits do.

Skip it if you need a clearly itemized installation set for an EU2200i; Grenergy’s EU2200i kit lists a regulator assembly and fuel adapter assembly.

Honda EU2200i owners seeking three stated fuel options for family emergencies, RV use, or camping may find this listing relevant. Its specifications conflict on fuel count, so weigh that ambiguity before choosing it.

Listed on Amazon as: EU2200i Propane, Natural Gas and Gasoline Tri Fuel Conversion Kit, Compatible with Honda Eu2200i Generator, 3 Year Warrnaty, Suitable for Family Emergencies, RVs and Camping

#9

9. Anxingo Tri-Fuel Carburetor Kit

• Warranty Description: 1 Year

Best for: Small-engine replacement carburetor.

Why it ranks #9: Its fitment names Generac, Ai Power, Champion and Firman generators, and the package lists a carburetor, gaskets, fuel line and clamps.

A manual three-fuel or dual-fuel carburetor is the core of this Anxingo kit, enabling a compatible generator to use alternative fuels through a replacement-carburetor setup. Its included gaskets, fuel line, and clamps provide several named installation pieces for owners of listed smaller generator models.

The fitment text names Generac GP1800 and GP3250, Ai Power AP4000 and SAU4500, Champion 3000 and 4000, and Firman P03501 applications. The kit includes a manual carburetor, three gaskets, a fuel line, and two fuel-line clamps, giving buyers specific replacement and connection components to work with. It is described as supporting three-fuel or dual-fuel use, but the listing also cautions that natural-gas and LPG pressure must remain within the specified range, which is not provided here.

Skip it if you need a stated pressure range before buying; the Duromax XP12000EH natural-gas kit lists its required inlet pressure.

Owners of the listed Generac, Ai Power, Champion, or Firman models seeking a replacement manual carburetor are the intended buyers. Check engine fit and fuel pressure requirements, since the supplied listing does not state the pressure range.

Listed on Amazon as: Anxingo 163cc 196cc 212cc 224cc Tri Dual Generator Carburetor Kit

#10

10. Generic Duromax Natural Gas Kit

Best for: Duromax XP12000EH natural gas.

Why it ranks #10: It is limited to low-pressure natural gas for the Duromax XP12000EH, with a stated 9–13.8-inch water-column inlet range, rather than propane conversion.

Use of the carburetor’s existing port is this kit’s defining feature, enabling low-pressure natural-gas conversion without permanent modification to a compatible Duromax XP12000EH. The stated setup also retains gasoline operation and describes reconnecting the stock propane hose to switch back to propane.

This kit is specifically listed for the Duromax XP12000EH and low-pressure natural gas, with a required inlet pressure of 9–13.8 inches water column. It uses an existing carburetor port, so the stated conversion does not require permanent modification and preserves the ability to run gasoline. The listing also explains that reconnecting the stock propane hose returns the generator to propane operation. Buyers therefore need to check both the named generator model and the required gas inlet pressure for their setup.

Skip it if you want a tri-fuel carburetor kit for a Honda EU2200i; Grenergy’s EU2200i kit lists gasoline, propane, and natural gas.

Duromax XP12000EH owners seeking a reversible, low-pressure natural-gas option while retaining gasoline and stock-propane use are the intended buyers. The stated inlet-pressure range and exact generator model are essential fit boundaries.

Listed on Amazon as: Natural Gas Conversion Kit Compatible with Duromax XP12000EH Generator