Best Dual Fuel Generator Conversion Kit Options for 2026
Searching for reliable dual fuel conversion solutions for generators? This guide showcases top dual fuel or LPG/CNG carburetor kits designed to convert gasoline generators to work with natural gas or propane. Each pick is aligned with common GX390, GX340, and similar engine models, offering OEM-style fit, easy installation, and broad compatibility across popular brands. Explore features, compatibility, and practical buying tips to choose a kit that matches your generator and fuel preferences.
| Product | Brand | Approximate Fit | Notes |
|---|---|---|---|
| YAMAKATO Tri Fuel Conversion Kit | YAMAKATO | Honda GX270/ GX340/ GX390; Generac/ Champion/ Predator ranges | |
| Chikia Dual Fuel Carburetor Kit | Chikia | Predator, Craftsman, Generac, Duromax 5-6.5kW | |
| LEIMO KPARTS Manual Choke Dual Fuel Kit | LEIMO KPARTS | GX390 188F; 5-6kW class | |
| Carburionix GX390 Dual Fuel Kit | Carburionix | GX390, GX340, GX420 4.5-8kW | |
| Hipa GX390 Dual Fuel Carb Kit | Hipa | GX390/ GX340/ GX420; Predator/ Champion lines |
YAMAKATO Tri Fuel Converter Kit
The YAMAKATO kit supports dual or tri-fuel configurations, enabling gasoline-to-LPG/LNG/CNG transitions for a range of engine displacements including 301, 337, 389, 420, 439, and 459 cc. It targets popular OEMs and clone generators such as Generac GP5000 series, Firman, All Power, Champion, and more. The kit emphasizes OEM-standard components and gasket integrity for reliable mounting and seal performance during operation.
Chikia Dual Fuel Carburetor Kit
The Chikia kit provides a dual-fuel carburetor solution with manual choke for generators within Predator, Craftsman, Generac, and Duromax lines. It supports LPG/CNG conversion with defined LPG and NG pressure ranges and a regulated output. This kit is positioned for 4.5kW to 6.5kW generator ranges and emphasizes straightforward installation for mid-range portable units.
LEIMO KPARTS Manual Choke Dual Fuel Kit
New manual choke dual fuel conversion for GX390 188F engines, covering a 4.5-5.5kW class. It highlights compatibility with 1kW to 6kW generating sets and notes LPG/NG conversion usage. The kit is designed to be compact yet effective for mid-size portable generators, with emphasis on dual-fuel operation and straightforward installation.
Carburionix GX390 Dual Fuel Kit
The Carburionix kit focuses on dual fuel capabilities for GX390, GX340, GX420 engines with a 5-8kW output range. It targets portable gasoline generators and emphasizes LPG and NG conversion support, with compatibility across GX340 and GX390 family. The kit is positioned for users seeking reliable mixed-fuel operations and efficient fuel switching.
Hipa GX390 Dual Fuel Carburetor Kit
The Hipa kit targets GX390 188F platforms and extends to GX340 and GX420 variants, supporting LPG/CNG conversion and a 4.5-6.5kW output envelope. It lists compatibility with Predator, Generac, and Champion lines, making it suitable for owners of mid-to-high output portable generators who want flexible fuel options and dependable carburetor performance.
Buying Guide: Key Considerations For Dual Fuel Kits
- Engine compatibility: Confirm the kit supports your engine model and displacement (GX390, GX340, GX420, etc.).
- Fuel type and performance: Evaluate LPG/CNG compatibility, pressure ranges, and expected output (kW) to match your generator’s rating.
- Ease of installation: Look for kits with clear mounting hardware, seals, and simple choke options that fit your unit without permanent modifications.
- Quality and OEM alignment: Prioritize kits advertised as OEM-standard or designed for major brands to ensure reliable operation and durability.
- Safety features: Check for structural safety, secure mounting, and tested gas lines to reduce leakage risks during operation.
- Maintenance and replacement parts: Consider availability of gaskets, spacers, and carburetor components to support long-term service.
- Warranty and support: Favor products with documented warranty coverage and accessible customer support in case of fitment questions.
When choosing a dual fuel kit, compare engine compatibility, fuel compatibility (LPG vs. NG), and the expected efficiency of the conversion. It is important to verify the kit’s fitment against your generator’s brand and model number to avoid mismatches that could affect performance or safety. Consider your typical fuel source and usage pattern to determine whether LPG/CNG or classic gasoline with a dual-fuel option best meets your needs.