J.I. Case has been powering American agriculture and construction since 1842, building diesel engines that have become legendary for their durability and dependability. From the robust 336 and 401 series that powered generations of Case tractors to the advanced 504 and Cummins-based engines in modern equipment, Case diesels are engineered for maximum torque and longevity. Their engines feature heavy-duty construction, wet sleeve cylinders, and proven designs that deliver reliable power in the most demanding conditions. Whether in backhoes, skid steers, tractors, or construction equipment, Case diesel engines have earned their reputation through decades of hard work in fields and job sites across America.

RF Engine is your complete source for Case diesel engines and parts, supporting the equipment that built America's infrastructure. We stock a comprehensive inventory of new aftermarket, remanufactured, and quality used Case engines and components for all models—from vintage 188, 207, and 336 engines to modern 445, 504, and 668 powerplants. Whether you're rebuilding a classic Case tractor engine, maintaining a backhoe loader, or servicing construction equipment, our extensive selection covers every Case diesel application. With hard-to-find parts availability, competitive pricing, and deep knowledge of Case engines, RF Engine delivers the parts and expertise that keep your Case-powered equipment earning its keep.