Engines

Rugged and reliable Challenger® Endurance diesel engines power each of the SP “C” Series windrowers, providing Tier III compliance without sacrificing power or fuel efficiency. Standard equipment on the SP115C is a 120-horsepower (86 kW), 4.4 liter (269 cu. in.) four-cylinder powerplant that is both turbocharged and aftercooled.
    
The SP185C, meanwhile, features an upgraded 6.6-liter (403 cu. in.) six-cylinder Challenger Endurance engine with turbocharger and air-to-air intercooling, for 190 horsepower (138 kW) to handle heavy loads at any altitude.

Both engines feature the latest technology in cross-flow design, which includes cast inlet channels and combustion chambers. Endurance engines
also feature internally balanced components for smoother operation and longer life.