Choosing a natural gas carburetor conversion kit can extend your generator’s versatility by enabling dual fuel operation. This guide highlights five reliable kits designed for popular models, detailing compatibility, installation notes, and key features. Each entry points to an Amazon listing for easy comparison and purchase.
| Product | Brand | Compatibility Snapshot |
|---|---|---|
| YAMAKATO 389cc 420cc Tri Dual Generator Carburetor Gas to LPG CNG Conversion Kit | YAMAKATO | Generac/Predator/Champion/Duromax/Honda (GX270–GX390 range) and various cc engines |
| YAMAKATO Dual Tri Fuel Carburetor for Predator 4000 4375 | YAMAKATO | Predator/Generac/Champion/Honda GX160–GX224 range |
| AUTOKAY Dual Fuel Carburetor LPG NG Conversion Kit | AUTOKAY | GX390 engines (4.5–5.5kW class) and related portable generators |
| DVBB 389cc 420cc Tri Dual Generator Carburetor | DVBB | Generac/Champion/Honda GX270–GX390 range |
| Nature Gas Propane Carburetor Conversion Kit for Predator Harbor Freight | ALLMOST | Predator Harbor Freight 3200–4000W |
Below are detailed sections for each option, focusing on practical compatibility and installation considerations to help you compare effectively.
YAMAKATO 389cc 420cc Tri Dual Generator Kit
The YAMAKATO Tri Fuel Kit supports a broad displacement range (301–459 cc) and multiple engine families, including Generac GP models and various GX270/GX340/ GX390 clones. It provides a manual carburetor with dual- or tri-fuel functionality to convert gasoline generators to natural gas, LPG, LNG, or CNG. The kit includes non-asbestos mounting gaskets and is designed to align with OEM standards for several popular brands, facilitating replacement and conversion. It is suitable for users seeking a versatile, OEM-like conversion option with broad generator compatibility.
YAMAKATO Dual Tri Fuel Carburetor for Predator 4000
This dual/tri-fuel kit targets Honda GX160–GX224 class engines and compatible Generac/Champion units. It includes an OEM-quality carburetor replacement with mounting gaskets, enabling conversion from gasoline to natural gas, LPG, LNG, or CNG. The product notes emphasize compatibility with a wide range of popular portable generators, including many Champion, Generac, Ai Power, Ironton, and Firman models. It is designed for users seeking a robust, multi-fuel solution with a focus on durability and compatibility across brands.
AUTOKAY Dual Fuel Carburetor for GX390
The AUTOKAY kit is tailored for GX390 188F portable gasoline engines within the 4.5–6 kW range. It specifies dual-fuel operation (gasoline and LPG/NG) and comes with an air filter and spacer insulator. Its installation is targeted at Honda GX390 variants and similar engines, offering a practical option for users looking to increase fuel flexibility without extensive engine modification. The kit emphasizes fuel efficiency and stable operation across fuel types, suitable for mid-range portable generators.
DVBB 389cc 420cc Tri Dual Generator Carburetor
The DVBB kit mirrors the broad compatibility of the YAMAKATO options, covering 301–459 cc displacement ranges and various engines across Generac, Champion, and Honda clones. It is described as a tri-fuel or dual-fuel manual carburetor kit with OEM-like quality, designed for natural gas and LPG conversions. The inclusion of extensive compatibility notes—covering multiple makes and models—makes it a versatile choice for mixed-generation generator fleets or DIY enthusiasts seeking a comprehensive tri-fuel solution.
Nature Gas Propane Carburetor Conversion Kit
This ALLMOST kit is designed for Predator Harbor Freight 3200–4000-watt generators. It includes a carburetor assembly and three gaskets for a straightforward swap to a natural gas or propane power source. The emphasis is on ease of installation and reliable operation, targeting users who want a simple, ready-to-use solution for basic conversion needs on mid-range portable units.
Natural Gas Conversion Kit for Duromax XP12000EH
Note: This option is included in the broader list for context, but ensure it matches your unit’s model and port configuration before purchasing. It emphasizes a no-permanent-modification approach, enabling gasoline operation to be retained and natural gas added via an installed inlet. Ideal for Duromax XP12000EH users seeking a reversible conversion path with low impact on original fuel systems.
KINDZA Carburetor LPG Gas Generator Kit
The KINDZA kit targets Harbor Freight Predator models in the 5–8 kW range, offering a dual-fuel carburetor with LPG and natural gas compatibility. It claims compatibility with Honda GX390 188F engines and similar displacements, with a focus on reliable mixed-fuel operation and compatibility across popular predator and GX-series generators. Installation guidance and included gaskets support a straightforward upgrade path for users seeking practical dual-fuel performance.
RAROZEEK Dual Tri Fuel Carburetor for Generac and Champion
The RAROZEEK kit supports dual- and tri-fuel configurations for Honda GX160–GX224 engines and corresponding Generac/Champion units. It emphasizes OEM-quality construction and broad compatibility, with extensive model listings for 196cc–224cc engines. The kit is positioned as a flexible solution for users running mixed-brand fleets, offering reliable conversion to natural gas or propane alongside gasoline.
Buying Guide: Key Considerations for Natural Gas Carburetor Conversions
- Engine compatibility: Check displacement (cc), model family (Honda GX, Generac, Predator, Champion, etc.), and whether the kit covers GX270/ GX340/ GX390 or larger Generac ranges. A mismatched kit may not seal or calibrate properly.
- Fuel flexibility: Decide between dual-fuel and tri-fuel configurations. Tri-fuel kits support more fuel types but can be more complex to install. Consider your typical fuel availability and storage options.
- Installation requirements: Look for kits with non-asbestos gaskets, OEM-quality carburetors, and clear mounting hardware. Some kits require tuning or professional calibration; others are more plug-and-play.
- Warranty and OEM standards: Favor products marketed as OEM-standard or OEM-quality where possible, as these often provide better long-term reliability and easier part replacement.
- Maintenance implications: Dual/tri-fuel systems may require more frequent inspection of seals, gaskets, and ignition timing. Ensure you have a maintenance plan and spare parts on hand.
- Installation impact on performance: Some kits emphasize higher throughput for 4–6 kW generators, while others focus on broad compatibility. Match your generator’s output and intended usage (emergency power vs. portable use).
- Reversibility: If you want to revert to gasoline anytime, choose kits that advertise easy reversal and retention of stock fuel lines and mounting points.
- Safety and compliance: Ensure any conversion adheres to local regulations and manufacturer recommendations. Proper gas fittings and leak testing are essential for safe operation.