Best Gasoline to CNG Conversion Kits for Generators

Answering the question for buyers seeking reliable gasoline to CNG conversion options, this guide highlights five top kits that help run generators on propane, natural gas, or gasoline with minimal modification. These kits are best for emergency power users, hobbyists, and households looking for flexible fuel sources. Below, you’ll find quick product comparisons, suitability notes, and a practical buying guide to aid quick decisions.

Product Fuel Options Best For Notes
EU2000i Tri Fuel Conversion Kit Propane, Natural Gas, Gasoline Honda Gen Owners Easy bolt-on, no carburetor mods
DVBB P27-3DL Carburetor Kit Gasoline to LPG/CNG DIY hobbyists OEM-quality, broad generator compatibility
GX390 Dual Fuel Conversion Kit Gasoline, LPG, CNG Mid-range portable gensets Tri/dual fuel versatility
GX160/168F LPG/CNG Kit Propane, LPG, CNG Small engines Pressure regulator focus
EU3000is Tri Fuel Kit Propane, Natural Gas, Gasoline Home backup gensets No drill, quick disconnect design

Each product below is presented with a concise overview, who it’s best for, and practical considerations. The goal is to help you compare options quickly and choose the kit that fits your generator type and fuel access.

EU2000i Propane, Natural Gas & Gasoline Tri Fuel Conversion Kit

EU2000i Tri Fuel Conversion Kit

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This kit is designed for Honda EU2000i generators, enabling operation on propane, natural gas, or gasoline. It ships as a complete package and is preset for propane use right out of the box, requiring no changes to the factory carburetor. It is best for Honda generator owners who want immediate propane capability with a simple bolt-on install. A limitation is that performance data aren’t specified here; verify compatibility with your exact model.

DVBB P27-3DL Tri Fuel Carburetor Kit

DVBB P27-3DL Carburetor Kit

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The DVBB P27-3DL kit is described as compatible with multiple brands and models, including Honda GX270/340/390 families and various Generac, Firman, Champion, and other popular generators. It supports conversion to LPG, LNG, or CNG and offers a tri-fuel or dual-fuel option. Best for versatile DIY projects that require broad compatibility. A potential limitation is the wide compatibility claim; verify exact model fit before purchase.

GX390 188F Dual Fuel Carburetor LPG & CNG Kit

GX390 Dual Fuel Conversion Kit

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This kit targets GX-series generators, enabling dual-fuel operation with LPG/CNG and gasoline. It is positioned for 4.5–5.5 kW class units and is useful for Predator, Champion, and similar models. It’s best for users with GX390 or compatible engines seeking fuel flexibility without major overhauls. A caution is to confirm choke compatibility and mounting clearances for your exact model.

LPG/CNG Converter Kit for Hond GX160/GX168F/GX200

GX160/GX168F/GX200 Converter Kit

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Designed for small Honda engines (GX160, GX168F, GX200), this kit focuses on LPG and CNG with a built-in pressure reducing regulator. It’s best for compact portable tools and small generators where fuel flexibility matters. A limitation is that it may require additional hose fittings or regulators depending on the exact fuel source and setup.

EU3000is Propane, Natural Gas & Gasoline Tri Fuel Conversion Kit

EU3000is Tri Fuel Kit

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This kit is tailored for Honda EU3000iS/IS generators, offering a no-drill installation and a direct replacement lower panel for quick disconnects. It supports propane and natural gas use while preserving full factory-rated power on propane. Best for home backup setups where ease of installation and reliable performance are priorities. A potential limitation is the note about additional hose fittings being sold separately for natural gas connections.

Buying Guide

What to consider when choosing a gas-to-CNG conversion kit for a generator:

  • Generator compatibility: Confirm model, displacement, and mounting requirements. Some kits are model-specific while others claim broad compatibility.
  • Fuel options: Decide which fuels you need (propane, natural gas, or LPG/CNG) and ensure the kit supports those fuels.
  • Installation effort: Look for bolt-on designs with minimal carburetor modification. Drilling and permanent changes add complexity.
  • Power impact: Some kits claim no power loss when running on propane; verify if the kit maintains factory-rated output for your use case.
  • Hose and regulator needs: Check whether hoses, fittings, and regulators are included or sold separately.
  • Durability and maintenance: Long-term storage considerations and prevention of carburetor gumming are important for emergency use.
  • Safety considerations: Ensure proper venting, leak checks, and adherence to local fuel regulations when converting to gaseous fuels.

Frequently Asked Questions

  1. Can any generator be converted to run on LPG or CNG?
    – Not every model supports conversion. Check the kit’s compatibility list and confirm fit with your exact generator model and engine type.
  2. Will converting to propane reduce power output?
    – Some kits claim no loss of power, but real-world results depend on the engine, fuel pressure, and installation quality.
  3. Do these kits require professional installation?
    – Many kits are designed for DIY bolt-on installation, but some engines may benefit from expert setup to ensure proper fuel delivery and safety.
  4. Are additional hoses or regulators always needed?
    – Some kits include all necessary components; others require extra hoses or regulators sold separately. Check the product description carefully.
  5. Is natural gas a reliable primary fuel for generators?
    – Natural gas can be convenient if a home supply line is available, but regulator sizing and fuel line compatibility are critical to ensure stable performance.
  6. What maintenance is required after conversion?
    – Regular leak checks, fuel quality monitoring, and carburetor clearance maintenance help prevent issues with gaseous fuels.