Mini-Mark: The Mini-Mark was designed for small 4 cylinder engine applications such as APU’s (Auxiliary Power Units) that supplement the vehicle’s main engine which supply additional power to semi trucks as well as commercial aircraft. 

Mark V: The Mark V is the perfect fuel cell system to supplement refrigerated trailer units to small box and delivery trucks.

Mark VI-Base: The Mark VI-Base unit is designed for medium duty diesel powered vehicles including school buses, small transit buses and tow trucks to small off-road equipment such as front loaders and dozers.

Mark VI-Modified: The Mark VI-Modified unit is a perfect for large transit buses and medium sized diesel engine applications from construction equipment to over the road Class 8 semi trucks.  The enclosure for the Mark VI-M is available in either Diamond Plated or Powder Coated Aluminum.

Mark VIII-Stainless Steel: The Mark VIII-Modified unit is the largest in our “Mark” series of fuel cell systems and supplements large diesel engines over 15 liters in size which are geared towards heavy duty off-road construction equipment to heavy duty trucks.  This unit also comes with the two enclosure options.