Power Solutions International, Inc. entered a multi-year supply agreement with NACCO Materials Handling Group, Inc., the global forklift manufacturer. PSI will supply NMHG with alternatively-fueled power systems. This agreement marks the launch of PSI's long-term 2.0-liter and 2.4-liter power system program. PSI's new engine displacements provide more power and torque and improved fuel efficiency at lower speeds. PSI will also continue to supply 4.3-liter and 5.7-liter power systems to NMHG, making PSI a supplier of internal combustion engines for NMHG's 1-ton to 8-ton forklift applications. PSI designed all four systems to run on propane and collaborated with NMHG on developing a newly certified compressed natural gas system.