Liberator Engine Company, LLC produces alternative fuel engines offering clean alternatives to oil. Our company is committed to utilizing petroleum-free fuels, cleaning up our environment, reducing the United States’ dependence on foreign oil, and creating US manufacturing jobs in the clean energy sector.

The first Liberator® engine, in a 6.0Ldisplacement, will be coming to market in 2014. The Liberator® 6.0L engine is built for the world’s toughest markets...on-road and off-road “severe use, bus, and equipment applications. Designed specifically as an alternative fuel engine from the ground up, the Liberator® 6.0L engine is the perfect clean replacement for a diesel power plant of similar displacement engines. Truck and bus owners need one thing from their engines more than any other and that’s torque. Big torque at low engine speeds is what is required to get heavy loads moving. The Liberator® engine is no stranger to torque. Our leading edge designs, never before utilized in medium and heavy-duty truck engines, produce maximum torque throughout the entire engine rpm range, but even more important, at critical low engine speeds.


Designed for the long haul, super strength castings and precision forgings are incorporated into the Liberator® 6.0L engine package. Liberator® can take the punishment--whether it’s the supercharged, intercooled high-flow aluminum cylinder head, or the massive forged crankshaft--while delivering the superior performance expected by professional drivers and fleet owners around the world.


Available to Original Equipment Manufacturers (OEMs) or for the repower of existing diesel vehicles, the Liberator® 6.0L engine can be utilized in numerous on-road and off-road applications including buses, trucks, agricultural and industrial equipment, and much more.


The unique Liberator® design allows our engine to run on multiple alternative fuels. The 6.0L Liberator® engine is coming to market in 2014 as an EPA/CARB certified engine for biomethane , compressed natural gas (CNG), liquefied natural gas (LNG), and propane autogas (LPG) for both on-road and off-road applications. 


Liberator Engine Company, LLC is a wholly owned subsidiary of Certification Services International, LLC.