Propane conversion kits let carbureted engines run on propane, gas, or other fuels with minimal modification. This article reviews five reliable options, highlighting compatibility, ease of installation, and key features. Use the buying guide below to compare options and choose the kit that best fits your carbureted engine, whether it’s a small generator, automotive engine, or home backup system.
| Product | Brand | Engine Type | Key Benefit |
|---|---|---|---|
| Impco Complete Propane Conversion Kit Ford 300 4 6 Cyl Carbureted Engine 3 Inch Bolt | Impco | Ford 300 V6/V8 carb | Direct bolt-on, includes throttle body |
| YAMAKATO 389cc 420cc Tri Dual Generator Carburetor LPG CNG Conversion Kit | YAMAKATO | Various generators (GX270–GX390, etc.) | Tri/dual fuel capability, OEM quality |
| Grenergy EU2200i Propane, Natural Gas & Gasoline Tri Fuel Conversion Kit | Grenergy | Honda EU2200i series | No modifications, ready-to-run, reliable |
| Mikatesi 039-122 Generator Propane Conversion Kit | Mikatesi | Honda and various generators | Three-fuel options (propane, natural gas, gasoline) |
| New manual choke Dual fuel carburetor LPG NG conversion kit 4.5-5.5KW GX390 188F | LEIMO KPARTS | GX390-based generators | Manual choke, LPG/NG dual fuel |
Note: The table above summarizes five options selected for carbureted engines and generators. Each option provides a pathway to run propanes or mixed fuels with varying installation requirements and compatibility scopes. The following sections detail each product with practical information.
Impco Complete Propane Conversion Kit Ford 300
Brand: Impco. This complete straight propane conversion kit is designed for the Ford 300 engine with a carbureted setup. It includes a new throttle body and mounts directly to the intake, simplifying installation and preserving engine performance. The kit focuses on a straightforward bolt-on approach for reliable operation in carbureted Ford applications.
YAMAKATO 389cc–459cc Tri Dual Generator Carburetor LPG CNG Conversion Kit
Brand: YAMAKATO. This multi-displacement carburetor kit supports multiple generator brands and engine sizes, providing tri-fuel or dual-fuel capabilities. It includes non-asbestos mounting gaskets and aims to deliver OEM-like quality for Generac, Champion, Firman, All Power, and related generator models. The kit is oriented toward reliable propane or natural gas conversions for carbureted gensets.
LEIMO KPARTS New Manual Choke Dual Fuel Kit for GX390
Brand: LEIMO KPARTS. This manual choke dual-fuel carburetor kit is designed for GX390-based generators, enabling LPG/NG conversion with a noted fitment for 5KW to 6KW sets. The kit emphasizes dual-fuel operation and a straightforward installation process for propane or natural gas usage.
Grenergy EU2200i Tri Fuel Kit
Brand: Grenergy. This complete kit for Honda EU2200i generators includes everything needed to operate on propane, natural gas, or gasoline. It highlights no need to modify the factory carburetor, immediate run-ready setup, and robust compatibility with common natural gas supply options for emergency or remote use. It is pitched as a reliable all-in-one solution for tri-fuel operation.
ALLMOST Nature Gas Propane Carburetor Conversion for Predator
Brand: ALLMOST. Designed for Predator Harbor Freight generators, this kit converts to propane or natural gas, replacing the stock carburetor assembly with a simplified installation. It includes gaskets and aims for straightforward operation and compatibility with 3200–4000-watt class units, suitable for backup power applications.
Buying Guide: Propane Carbured Engine Conversion Considerations
- Engine compatibility: Verify displacement range, carburetor type, and mounting compatibility with your specific engine or generator model. Some kits target select brands (Honda, Generac, Predator), while others offer broader compatibility for various carbureted engines.
- Fuel flexibility: Decide if you need single-fuel propane, or tri/dual-fuel capabilities (propane, natural gas, gasoline). Tri/fuel kits reduce downtime during fuel shortages and can improve maintenance options.
- Installation ease: Look for bolt-on designs, included gaskets, and clear mounting instructions. Kits that require minor machining or custom fittings may increase installation time and cost.
- Carburetor impact: Confirm whether the kit requires carburetor modification or keeps the original carburetor intact. Some kits preserve the factory carburetor, while others replace or modify it for fuel compatibility.
- Safety and compliance: Ensure kits come with proper seals, gaskets, and certifications where applicable. Check for signs of proper venting and fuel line compatibility with propane or NG supplies.
- Availability of components: Consider whether replacement parts and support are readily available from the brand or distributors, especially for older engines or non-mainstream models.
- Maintenance impact: Evaluate whether using propane requires different maintenance intervals or additional components such as inline filters or pressure regulators.
- Cost vs. benefit: Weigh upfront kit costs against long-term fuel savings, emergency readiness, and potential warranty implications from the vehicle or generator manufacturer.
- Outdoor and emergency usage: For generators, consider weather resistance, portability, and the feasibility of using propane storage safely during outages or outdoor work.
When selecting a propane conversion kit for carbureted engines, prioritize compatibility with your exact engine model, your fuel strategy (propane only vs. tri-fuel), and installation complexity. While some kits offer a near plug-and-play experience, others require more involved modifications. Always follow manufacturer installation guides and, if needed, consult a professional mechanic or technician to ensure safe, reliable performance.