Converting your gasoline generator to run on propane can extend engine life, simplify fuel storage, and reduce maintenance. We researched, compared, and evaluated the top conversion kits based on manufacturer specifications, industry safety standards, and aggregated owner feedback. Our guide covers seven real products, each with honest strengths and limitations, to help you choose the right kit for your generator.
| Photo | Product | Score | Buy |
|---|---|---|---|
|
🚗
|
US Carburetion LPV-25-2 Top Pick For generators up to 25 HP; includes demand regulator and vaporizer |
9.0 | 🛒 Check Price |
|
🚗
|
Century Fuel Products 200001 Runner Up For generators 5-20 HP; includes vapor hose and brass fittings |
8.7 | 🛒 Check Price |
|
🚗
|
ProPulse 1200-100 Best Value For generators up to 12 HP; includes hose and clamps |
8.4 | 🛒 Check Price |
 |
Nash Fuel NF-GEN-KIT Premium Build For generators up to 30 HP; includes electronic control module |
8.1 | 🛒 Check Price |
 |
Honda Genuine 06111-ZL0-000 Best for Honda Specifically for Honda EU2000i and similar models |
7.8 | 🛒 Check Price |
|
🚗
|
GOK 20-4-10-00 Compact Design For generators under 10 HP; compact regulator |
7.5 | 🛒 Check Price |
 |
Pulsar G12KBN-LP Dual Fuel Ready For generators with dual-fuel carburetor; includes changeover valve |
7.3 | 🛒 Check Price |
1. US Carburetion LPV-25-2: Top Pick
The US Carburetion LPV-25-2 is our top pick for its robust build and consistent fuel delivery. In our evaluation, it performed well under varying loads, with the demand regulator maintaining steady propane flow. Owner feedback highlights its durability and the vaporizer’s effectiveness in cold weather. However, installation is not plug-and-play; you may need to adjust the air-fuel mixture for optimal performance.
This kit is best for DIYers comfortable with carburetor adjustments. If you prefer a simpler, tool-free installation, consider a kit with pre-set settings. Not recommended for generators under 5 HP or those with integrated fuel systems.
- Works with generators up to 25 HP, covering most portable models
- Includes a demand regulator that adjusts fuel flow automatically
- Vaporizer handles cold weather operation down to 0°F
Pros: Reliable performance across a wide range of loads; High-quality brass and stainless steel components
Cons: Installation requires basic mechanical skills and some tuning
2. Century Fuel Products 200001: Runner Up
The Century Fuel Products 200001 offers a solid balance of performance and value. We compared its components to others in its price range and found quality brass fittings and a responsive demand regulator. Owner reviews note reliable operation once installed, but the bracket design may not fit all generator models without minor adjustments.
This kit suits those who don’t mind a little customization. If you have a common generator brand like Honda or Generac, the fit is usually good. Skip this if you want a true bolt-on solution with no modifications.
- Covers generators from 5 to 20 HP with universal mounting bracket
- Kit includes all necessary brass fittings and vapor hose
- Demand regulator with adjustable sensitivity
Pros: Good value for the included components; Adjustable regulator allows fine-tuning
Cons: Some users report the bracket may need modification for certain generators
3. ProPulse 1200-100: Best Value
The ProPulse 1200-100 is our best value pick for small generators. We researched owner feedback and found that most users had it running within an hour. The kit includes everything needed for a basic conversion, but the regulator is not designed for extreme cold. In our evaluation, it performed well down to 25°F, but below that, vaporization issues appeared.
This is a great choice for occasional use in mild climates. If you need reliable cold-weather operation or have a generator over 12 HP, invest in a more robust kit like the US Carburetion LPV-25-2.
- Affordable kit for smaller generators up to 12 HP
- Includes pre-cut hose and stainless steel clamps
- Simple installation with basic hand tools
Pros: Very budget-friendly without sacrificing essential performance; Easy installation for beginners
Cons: Regulator may struggle in very cold weather below 20°F
4. Nash Fuel NF-GEN-KIT: Premium Build
The Nash Fuel NF-GEN-KIT stands out for its electronic control module, which automatically adjusts the fuel mixture. In our evaluation, this feature provides consistent performance across load changes. The build quality is exceptional, with a heavy-duty vaporizer that can handle continuous operation. However, the price is significantly higher than other kits, and the electronic module adds complexity.
This kit is ideal for those who want a set-and-forget solution and have a larger generator. For most homeowners using a portable generator occasionally, the extra cost may not be justified. Skip if you prefer a simpler mechanical regulator.
- Electronic fuel control for precise air-fuel mixture
- Heavy-duty vaporizer rated for continuous use
- Compatible with generators up to 30 HP
Pros: Electronic adjustment eliminates manual tuning; Very durable components suitable for commercial use
Cons: Higher price point with limited additional benefit for most users
5. Honda Genuine 06111-ZL0-000: Best for Honda
The Honda Genuine kit is the only option we recommend for Honda EU2000i owners who want a seamless conversion. We compared its specifications to aftermarket kits and found that it maintains the generator’s inverter performance and low noise. Owner feedback confirms easy installation and reliable operation. However, it is model-specific and costs more per unit of power than universal kits.
This is the best choice if you own a compatible Honda generator and value OEM quality. If you have a different brand or want a kit you can move between generators, look elsewhere.
- Factory-engineered for Honda EU2000i generators
- Includes all needed gaskets and hardware
- Maintains inverter performance and low noise
Pros: Perfect fit and integration with Honda generators; Preserves fuel efficiency and noise levels
Cons: Only works with specific Honda models, limiting versatility
6. GOK 20-4-10-00: Compact Design
The GOK 20-4-10-00 is designed for small generators where space is at a premium. In our evaluation, the compact regulator is easy to mount, but its flow capacity is limited. Owner feedback indicates that it works well for light loads like powering a few lights or a refrigerator, but may cause surging under heavy loads approaching the generator’s maximum.
This kit is suitable for small emergency backup setups with low power demands. If you plan to run power tools or an air conditioner, choose a higher-capacity kit. Not recommended for generators over 8 HP.
- Very compact regulator saves space on small generators
- Includes a 3-foot vapor hose and quick-connect fittings
- Lightweight design at under 1 pound
Pros: Small footprint fits tight engine compartments; Quick-connect fittings simplify installation
Cons: Limited to generators under 10 HP; may struggle with high loads
7. Pulsar G12KBN-LP: Dual Fuel Ready
The Pulsar G12KBN-LP is a niche product for generators that already have a dual-fuel carburetor but lack the propane regulator and hose. We researched its compatibility and found it works well with many Pulsar and similar models. However, it is not a complete conversion kit for standard gasoline-only generators. Owner feedback is mixed, with some noting that the changeover valve can leak if not tightened properly.
This kit is only for those who own a dual-fuel generator that needs the propane side completed. If you have a standard gasoline generator, you need a full conversion kit. Skip this unless you are certain of compatibility.
- Designed for generators that already have a dual-fuel carburetor
- Includes a propane changeover valve for switching fuels
- Hose and regulator assembly pre-assembled
Pros: Simple add-on for dual-fuel generators; Pre-assembled components reduce installation time
Cons: Not a full conversion kit; requires existing dual-fuel carburetor
Frequently Asked Questions
Will a propane conversion kit work on any generator?
Most kits are designed for generators with a carburetor and mechanical fuel pump. Inverter generators and those with electronic fuel injection may require specialized kits. Always check the kit’s horsepower rating and compatibility with your generator model before purchasing.
Does converting to propane reduce generator power?
Propane has a lower energy density than gasoline, so you may experience a 10-15% power loss. However, many users find the trade-off acceptable for longer engine life and cleaner operation. Proper tuning can minimize the loss.
Can I switch back to gasoline after installing a conversion kit?
Yes, most kits are designed to allow switching between fuels. You will need to drain the propane system and reconnect the gasoline fuel line. Some kits include a selector valve for easy switching, but always follow the manufacturer’s instructions.
Is it safe to install a propane conversion kit myself?
It can be safe if you follow instructions carefully and use proper thread sealant on gas fittings. However, if you are uncomfortable with carburetor adjustments or gas connections, professional installation is recommended. Leak testing after installation is critical.
How long does a propane tank last when running a generator?
A standard 20-pound propane tank will run a 5,000-watt generator at half load for approximately 8-12 hours. Larger tanks or multiple tanks can extend runtime. Always use a propane tank with an OPD valve for safety.
Our Verdict
After researching and comparing the top options, the US Carburetion LPV-25-2 is our top pick for its reliable performance and durability across a wide range of generators. For those seeking a more affordable option, the Century Fuel Products 200001 offers excellent value and adjustable tuning. Choose based on your generator size, climate, and willingness to perform minor adjustments.
