A CNG system designed and manufactured with you in mind!!

We want to partner with your business to provide quality product, service, support and more!


Gratec's Dual Fuel Diesel Prime system has been recognized across the world as one of the best diesel conversion systems to CNG or LPG on the market. The Gratec Prime system has a proven track record from light duty trucks to the heavy duty truck sector. The Gratec Dual Fuel system is yielding an average diesel substitution rate of 60% with cleaner burning CNG! Fleets across the USA, and the world, are seeing the payback and efficiency of the Gratec Dual Fuel System.


Gratec Sequential Premium Systems offers a full line of bi-fuel conversion kits for gasoline engines from 2-16 cylinders. Our premium system is recognized across the globe as user friendly, easy to use and able to work with even the most sophisticated engine families. The Gratec Sequential system offers users a way to save money while still getting the power, torque and fuel economy of their vehicle. Our systems can convert your vehicle to CNG or LPG and Gratec offers many add-ons that make the installation process easy.


Here at Gratec we know that fuel savings is a very important part of your decision process. Please feel free to contact one of our service team members and they can help you with a savings analysis of your fleet vehicles. Not only do you save money but you also do your part in saving the planet! By switching your vehicle to CNG or LPG you are dramatically decreasing your carbon footprint.

Only the Best

The Gratec Standard was put into place to gaurantee our valued customers that only top quality parts are being sent their way. We do not believe in cheap components that will fail the test of time.


Are you a producer not looking for an entire KIT but just pieces? No problem, we can custom quote! We manufacture most parts so you will be getting these at great rates!

Engineering Department

Our engineering department is constantly aiding in improving our technology. Do you need custom software? Our software engineers can help. Have a technical question? Our engineers are here to assist with that too.

Custom Branding

Are you seeking a CNG/ LPG conversion KIT that is branded to your companies name? We can do that! Contact us for more details.

Distributor Opportunities

Gratec is currently seeking distributors and installation shops across the USA. To become a regional distributor or an area conversion shop authorized by Gratec please contact our service department.


Thousands of our products are sold world-wide on a daily basis! Our products are proven around the world.

Easy to use Software

Our software is both extremely advanced yet user friendly. We have tuning options for beginners to advanced users that will make sure your vehicle is running correctly.

Customer Support

Our customer support is what sets us apart from all competition. We guarantee to provide you with an easy warranty item process, technical support, before and after sales and premium product guarantee.

Training Classes

Gratec now offers factory taught training classes around the country! We offer all levels of training classes from informational seminars about the industry to full hands on conversion classes. Gratec can even hold a training class at your facility personalized to your companies specific needs. Classes are currently enrolling, reserve a spot in one of our classes today! More info

Happy Customers

Gratec has many many happy customers around the world. Gratec takes pride in each customer and guarantees they will be satisfied with the service and product. Gratec offers free technical support with each system purchase so you can have the peace of mind an expert is only a phone call away. We believe in before and after sales support and once you start using Gratec you are a valued customer for life. More info

Certified Installers and Distributors

Gratec is currently seeking certified installation shops as well as certified distributors across the USA. For a full list of our current distributors and shops please click here to view our locator map. To apply to become a certified Gratec installation shop or a Gratec certified distributor please email service@gratec-cng.com for more information. More info