Will be used in the automakers new two-litre, direct injection, four-cylinder Drive-E powertrain.
Natural gas engine firm says market uncertainty in Europe, Russia and China have affected revenue.
The electrical generator is part of an experimental 7.5 kilo watt renewable energy system.
New F-450 and F-550 trucks will be available with Westport’s WiNG natural gas fuel system.
Vehicle sales are up in April but down for the year in China, but business is booming in North America where Ford Motor Co. is adding a week of production several plants.
Deal expected to earn Westport an extra $1.5 million