If you’re looking to expand your generator’s fuel versatility, a reliable LP or natural gas conversion kit can turn your gasoline-powered unit into a dual- or tri-fuel machine. This guide highlights top LP/Natural Gas conversion kits designed to work with common models and engine sizes, helping you compare compatibility, installation, and safety features. The selections below emphasize ease of use, OEM-like quality, and clear compatibility listings so American buyers can choose confidently for emergency power, job sites, or recreational use.
| Product | Engine/Model Compatibility | Fuel Type | Notes |
|---|---|---|---|
| Natural Gas Conversion Kit — Duromax XP12000EH | XP12000EH Dual Fuel | Natural Gas | No permanent modification; retain gasoline option |
| YAMAKATO Tri Dual Gen Carb Kit — Various GX engines | GX270/ GX340/ GX390 and similar Generac/Champion clones | Gas, LPG/CNG | OEM-style carb kit; broad compatibility |
| Nature Gas Propane Carb Kit — Predator Harbor Freight | Predator Harbor Freight 3200/4000 W | Gasoline to LPG/NG | Lightweight, simple replacement carburetor |
| YAMAKATO Dual Tri Fuel Carb Kit — Predator/Champion/Gennie | Predator/Champion/Generac clones; 196cc–459cc | Gasoline, LPG, Natural Gas | Tri-fuel capability with OEM-style parts |
| FWYWNL GX390 LPG/NG Carb Kit | Predator/Honda GX390 family | Gasoline to LPG/NG | Includes carb kit for 182F–420cc engines |
Note: The products listed here are selected for relevance to the keyword generator lp conversion kit. Always verify compatibility with your specific model and local fuel regulations before purchasing.
Natural Gas Conversion Kit For Duromax XP12000EH
The kit uses the existing carburetor port for the natural gas inlet, eliminating the need for permanent engine modification. It enables low-pressure natural gas operation while preserving the ability to run on gasoline. Switching back to propane is accomplished by reconnecting the stock propane hose, ensuring flexibility for different fuel sources without extensive downtime. This conversion is specifically described as compatible with the DUROMAX XP12000EH, offering a practical option for dual-fuel reliability.
YAMAKATO Tri Dual Fuel Carb Kit For GX Engines
This Tri fuel or dual fuel manual carb kit targets Huayi P27 series, Honda GX270/340/390 and similar displacement ranges (301–459 cc). It supports converting generators from gasoline to natural gas, LPG, LNG, or CNG, with mounting gaskets included. The kit is positioned as OEM-standard for various Generac, Champion, Firman, and Champion models, and is compatible with a wide range of engine variants (e.g., GP5000/GP6500 classes and beyond). It emphasizes compatibility breadth and a ready-to-install carburetor solution.
Nature Gas Propane Carb Kit For Predator/Harbor Freight
Designed for Predator Harbor Freight 3200–4000-watt units, this kit replaces the stock carburetor with a high-quality carburetor assembly and three gaskets. It focuses on straightforward operation and ease of installation, enabling efficient switching between gasoline and LPG/NG. The packaging emphasizes compatible packaging for common portable generators and offers a practical solution for users seeking a simple carburetor upgrade to support dual fuel operation.
YAMAKATO Dual Tri Fuel Carburetor For Predator/Champion
This carb kit covers Honda GX160/200 displacement variants and a broad mix of 196–459 cc generators. It supports tri-fuel use, combining gasoline with LPG and natural gas. Included are non-asbestos mounting gaskets, and the kit extends compatibility to Generac GP1800/GP3250/GP3300/GP3600 families, Ai Power AP4000/SAU-series, Ironton, and certain Champion models. The listing highlights OEM-quality construction and broad generator compatibility, making it a flexible choice for multi-fuel setups.
FWYWNL GX390 LPG/NG Carb Kit
This carburetor kit targets GX390 and GX340-based engines within predator and Honda clone families, with compatibility extending to a wide cc range from 182F up to 420cc engines. The kit supports converting gasoline operation to LPG or natural gas and is designed for a variety of Generac, WH-series, and XT-series units. It emphasizes a safety-conscious design and a straightforward installation process, aligning with practical, on-site fuel flexibility needs.
KELKONG LPG/NG Carb Kit For GX390 Family
Designed for GX270/ GX340/ GX390 displacement engines, this carb kit supports a wide array of generators with tri-fuel capabilities (gasoline, LPG, natural gas). It lists compatibility with Generac GP5000/GP5500/GP6500/GP8000E families and a range of WH/ XT-series models. The kit emphasizes safe operation, with a focus on proper carburetor design and reliable performance during dual-fuel use, making it suitable for users seeking robust multi-fuel options.
AUTOKAY Dual Fuel Carb Kit For GX390 Generators
Autokay’s dual fuel carb kit is rated at 5000–5500 watts, intended for GX390 188F portable generators, with compatibility extending to GX340/ GX270 engines. It supports a transition from gasoline to LPG/NG, with a focus on efficient fuel consumption and stable operation. The kit is positioned as a practical option for owners seeking an easy, mid-range dual-fuel conversion solution, accompanied by installation guidance and safety-focused design.
Chikia Huayi Dual Fuel Carb Kit For Predator/Champion
Chikia’s dual-fuel carburetor provides LPG/CNG conversion for a range of Predator, Craftsman, Generac, Duromax, and Honda GX models in the 4.5–6.5 kW class. The kit features manual choke and includes mounting hardware and non-asbestos gaskets. It emphasizes compatibility with a broad set of 9000–8750 watt-class units and champions a straightforward switch between fuel sources, suitable for users seeking a versatile, OEM-like replacement solution.
Buying Guide: Key Considerations For LP/Natural Gas Conversion Kits
When selecting a generator LP or natural gas conversion kit, consider fuel compatibility, engine size, and installation requirements. Review the manufacturer’s compatibility list to ensure your model is supported, and assess whether the kit preserves your ability to revert to gasoline as needed. Look for durable carburetor components, gasket quality, and support for safe high- and low-pressure fuel delivery. Evaluate the ease of installation, tools needed, and the availability of replacement parts. Compare weight, mounting options, and the potential impact on warranty terms.
Other important factors include fuel pressure specs and regulator requirements, especially for LPG and NG systems. Some kits are designed for simple carburetor swaps, while others require additional hoses, adapters, or tuning. If you rely on emergency power, prioritize kits with clear documentation, safety features, and proven performance across a range of engines. Finally, verify regional fuel availability and any local regulations governing alternative-fuel generators to avoid compliance issues.