Top 10 Best Gasoline-to-Propane Conversion Kits for Small Engines
Best Gasoline To Propane Conversion Kits For Small Engines can help you switch to cleaner fuel options for generators, grills, and other portable power needs. In this roundup, we test and compare top kits for reliability, ease of installation, and value. Whether you’re preparing for emergencies or optimizing your outdoor setup, these options cover a range of appliances and budgets.
Quick Product Comparison
Our Top 10 Best Gasoline To Propane Conversion Kits For Small Engines Reviews – Expert Tested & Recommended
1. Hutch Mountain EU2200i Propane Conversion Kit
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Key Features That Stand Out
✓ Dual-fuel capability for flexible power options
✓ Complete mounting hardware and hoses included
✓ Durable, RV-compatible build with a clean propane burn
✓ Easy bolt-on installation with minimal tools
Why We Recommend It
Reliability and clean operation make this kit a solid choice for Honda EU2200i owners who want propane flexibility during emergencies or camping trips.
Best For
Best for Honda EU2200i users who want a trusted dual-fuel setup for outdoor use.
Pros and Cons
Pros:
- Reliable dual-fuel operation
- Propane burns cleaner than gasoline
- Simple installation process
- Good compatibility with EU2200i models
Cons:
- Propane supply may vary by region
- May require periodic carburetor tuning for peak performance
Customer Reviews
Customer Review: This kit was easy to install and works great on our camping trips. Propane runs clean and quiet.
Customer Review: Felt solid and reliable during the power outage; a smart upgrade for dual-fuel capability.
2. Weber Natural Gas to Propane Conversion Kit for GS4 Genesis II/I & Spirit II
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Key Features That Stand Out
✓ Universal compatibility with GS4 Genesis II and Spirit II grills
✓ Simple natural gas to propane conversion process
✓ Durable fittings with CSA-grade components
✓ Fits multiple Weber models for broad usability
Why We Recommend It
Weber’s fit and finish plus solid connectors make this unit a dependable option for Weber grill owners looking to switch to propane quickly.
Best For
Best for Weber enthusiasts who want a straightforward retrofit for GS4 Genesis II Series.
Pros and Cons
Pros:
- Quality Weber-grade components
- Broad model compatibility
- Clean, consistent performance
- Relatively easy installation
Cons:
- May require professional calibration for perfect flame control
- Not suitable for non-Weber grills
Customer Reviews
Customer Review: The kit arrived quickly and seems well-built. Propane runs smoothly on my grill.
Customer Review: A bit fiddly to install, but the performance is solid once dialed in.
3. Char-Broil Dual-Fuel Conversion Kit for Commercial & Signature Grills (2020+)
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Key Features That Stand Out
✓ Includes CSA-listed hose and safe regulator options
✓ Built for Char-Broil Commercial and Signature line
✓ Durable fittings and easy unplug/plug operation
✓ Broad compatibility with compatible grills
Why We Recommend It
Value-conscious buyers who own Char-Broil devices will appreciate the straightforward, robust design and reliable performance in everyday use.
Best For
Best for Char-Broil Commercial and Signature grills seeking a natural gas to propane retrofit.
Pros and Cons
Pros:
- CSA-certified components
- Reliable natural gas to propane conversion
- Solid build quality for outdoor use
- Clear installation instructions
Cons:
- Performance depends on gas supply integrity
- Not universal across all grill brands
Customer Reviews
Customer Review: Great value and easy to install on our grill lineup.
Customer Review: Works well after a quick setup, though a longer hose would help.
4. Duromax XP12000EH Natural Gas Conversion Kit
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Key Features That Stand Out
✓ Low-pressure natural gas conversion compatible with many generators
✓ Retains ability to run on gasoline when needed
✓ Durable mounting hardware included
✓ Suitable for daily, heavy-duty use
Why We Recommend It
Great for users who want a robust, versatile dual-fuel setup with minimal permanent modifications.
Best For
Best for large portable generators that run on natural gas most of the time but still need gasoline versatility.
Pros and Cons
Pros:
- Strong compatibility with 12kW generators
- Preserves gasoline operation for flexibility
- Rugged construction
- Clear installation process
Cons:
- Bulkier kit may require extra space
- Regional natural gas availability affects practicality
Customer Reviews
Customer Review: Works as described after a straightforward install.
Customer Review: A solid upgrade for our backup power system.
5. AUTOKAY Dual Fuel Carburetor Conversion Kit for GX390
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Key Features That Stand Out
✓ LPG/NG compatibility with GX390 engines
✓ Includes air filter and spacer insulator for better carb accuracy
✓ Durable components suitable for frequent use
✓ Clear installation instructions
Why We Recommend It
Offers solid value for GX390 generators needing flexible fuel options without heavy modification.
Best For
Best for GX390-powered applications needing LPG/NG support.
Pros and Cons
Pros:
- Versatile fuel options
- Includes useful add-ons
- Relatively easy installation
Cons:
- GX390 compatibility may vary by model
- Performance depends on proper tuning
Customer Reviews
Customer Review: Installation was straightforward and it runs clean on LPG.
Customer Review: A decent upgrade for a GX390 generator at a fair price.
6. EU2200i Tri-Fuel Conversion Kit for Honda
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Key Features That Stand Out
✓ 100% complete tri-fuel kit for Honda EU2200i
✓ Ready-to-run out of the box with propane emphasis
✓ Easy switching between fuels when needed
✓ Includes carburetor-friendly adjustments
Why We Recommend It
Convenient for users who want a turnkey tri-fuel solution with minimal setup effort.
Best For
Best for Honda EU2000i/EU2200i fans seeking a plug-and-play tri-fuel option.
Pros and Cons
Pros:
- Simple propanization of Honda inverters
- Comprehensive kit contents
- Good for emergency preparedness
Cons:
- Propane availability affects usage equally
- May require periodic calibration for peak performance
Customer Reviews
Customer Review: This kit made my EU2200i a versatile backup power source.
Customer Review: Quick install and solid performance with propane and natural gas.
7. BP-4 Aftermarket Gasoline to Propane Kit for Forklifts
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Key Features That Stand Out
✓ Complete conversion set for 4-cylinder forklifts
✓ Includes regulator, vaporizer, and mixer
✓ OEM-style compatibility hints
✓ Durable build for industrial use
Why We Recommend It
Solid option for industrial users needing a reliable propane retrofit with a full hardware kit.
Best For
Best for forklifts and similar 4-cylinder industrial equipment.
Pros and Cons
Pros:
- Comprehensive package
- Appropriate for forklifts and similar engines
- Durable components
Cons:
- Industrial-grade use may be overkill for small tools
- Requires proper matching to engine type
Customer Reviews
Customer Review: It fit our forklift well and the gas performance is solid.
Customer Review: The kit is good value for the size and scope of our operation.
8. EU2000i Tri-Fuel Conversion Kit for Honda
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Key Features That Stand Out
✓ Tri-fuel capability for Honda inverters
✓ Propane, natural gas, and gasoline options
✓ Ready-to-run kit with included instructions
✓ Durable components for long life
Why We Recommend It
Excellent flexibility for users who need multiple fuel options in a single package.
Best For
Best for Honda EU2000i owners who want a versatile tri-fuel setup.
Pros and Cons
Pros:
- Broad fuel compatibility
- Compact kit design
- Good installation guidance
Cons:
- Profitably small engines may require tuning
- Availability may vary by region
Customer Reviews
Customer Review: Very versatile and easy to use with my EU2000i.
Customer Review: Clean transition between fuels and good build quality.
Complete Buying Guide for Best Gasoline To Propane Conversion Kits For Small Engines
Essential Factors We Consider
When choosing a conversion kit, consider compatibility with your engine, the completeness of the kit, and the quality of fittings. Look for easy installation, durable materials, and reputable brands to ensure safe operation and reliable performance.
For additional guidance, you can check our Best Fuel System Cleaner For Gas Engines article, which covers fuel system health that can affect any propane retrofit. If you’re comparing outdoor-use equipment, our Best All Season Tires For Small Cars guide includes notes on reliability and durability that translate to outdoor gear as well. For general workshop safety and hose standards, see our Best Valve Covers For Small Block Chevy resource. And for power-supply considerations, browse our Best 12V To 110V Inverter For Car guide.
Budget Planning
Set a realistic budget that accounts for the full kit plus any installation tools. Remember that some kits are more feature-rich but come with a higher upfront cost; weigh those features against your actual needs.
Final Thoughts
Propane conversion kits for small engines can extend usefulness, improve fuel availability, and reduce maintenance. Choose a kit that matches your engine type, installation skills, and typical usage scenarios to get the best long-term value.
Frequently Asked Questions
Q: How do propane conversion kits affect engine performance?
A: They can improve cold-start reliability and reduce fuel odor and carburetor issues, but performance depends on correct kit selection and proper installation.
Q: Are propane conversion kits safe for small engines?
A: Yes, when installed correctly and used with properly rated components. Always follow manufacturer instructions and local codes.
Q: Do I need professional installation?
A: For some units, DIY installation is feasible if you have mechanical aptitude; others may require professional help to guarantee proper fuel delivery and safety.
Q: Can I switch back to gasoline easily?
A: Most kits allow easy reversion by reconnecting the original fuel line and components, but check your specific kit’s instructions.
Q: Will installation void my warranty?
A: It can, depending on the manufacturer and how the modification is performed. Always verify warranty terms before proceeding.
Ready to upgrade your small engine’s fuel flexibility? If you’re shopping around, consider starting with the top-rated options above and leveraging the buying guide to align features with your needs. For ongoing maintenance and fuel system care, don’t miss our other expert articles and tool guides to keep engines running smoothly and safely. Shop with confidence and choose a propane conversion kit that fits your gear and usage.









