Stewarts is a locally owned radiator shop in Riverside that specializes in radiator repairs, rebuilds, recores, retrofits, custom fabrication.

At Stewarts Industrial Radiator Service, we’re experts in radiator repairs, rebuilds, recores, retrofits, replacements, custom fabrication, and sales. Our service technicians excel at working on all makes and models of medium- and heavy-duty radiators typically used in semis, tractors, off-highway trucks, industrial equipment, standby generators, classic cars, hot rods, RVs, and boats. We have thousands of satisfied clients throughout Riverside, San Bernardino, Hesperia, Rialto, Apple Valley, Lo...

At Stewarts Industrial Radiator Service, we’re experts in radiator repairs, rebuilds, recores, retrofits, replacements, custom fabrication, and sales. Our service technicians excel at working on all makes and models of medium- and heavy-duty radiators typically used in semis, tractors, off-highway trucks, industrial equipment, standby generators, classic cars, hot rods, RVs, and boats. We have thousands of satisfied clients throughout Riverside, San Bernardino, Hesperia, Rialto, Apple Valley, Los Angeles, Fontana, and Orange County, and are known for providing exceptional radiator services at fair prices. Your radiator plays a crucial role in the performance and longevity of your engine; don’t wait to bring it in for service if it is leaking or no longer providing sufficient cooling to your engine. For radiators with physical damage, such as cracks, punctures, and broken joints, our expert technician can repair your radiator. We offer weld repairs for copper, brass, and aluminum radiators. If the radiator has become clogged from internal corrosion, we’ll recommend an overhaul. During an overhaul or radiator rebuild, we take the radiator apart, flush out the core, rod out the tubes, straighten the fins, pressure test, and paint. If the radiator core or tank are no longer repairable, a new custom core can be fitted to your application to match OEM specs. Additionally, we sell OEM and OEE radiators and radiator parts as well as fabricate new metal radiators for custom cars, diesel repower conversions, motorhomes, off-highway machinery, forklifts, and other diesel engine equipment. Call ahead or stop in to our radiator shop in Riverside. We’re open Monday through Friday, between 7am and 5pm, and offer free estimates. We have same-day service available on most radiator repairs, and prompt turnaround times on radiator retrofits, rebuilds, and custom fabrication. We can also provide pickup and delivery for contractors and commercial clients.