Review on 🚗 Mishimoto MMRAD-B4-90 Performance Aluminum Radiator for Subaru Legacy 1990-1994: Enhance Cooling Efficiency and Boost Performance by Timothy Cole

Unlike Koyo, Mishimoto is a great racing company that guarantees their radiators regardless of use. This MMRAD-B4-90 corresponds to the Koyo R1819 radiator and is designed for older turbocharged vehicles. But people also drive them in newer Subaru. I use one in my coupe 98 2.5rs with STI swap. Before I bought this Mishimoto I had a Koyo cooler. I smelled like coolant all the time. I changed hoses, tightened clamps, etc. If I drove the car, drove home and parked it, I would have had a few drops of coolant in the lower fender area under the radiator, but I didn't see it any leaks. Finally, I pulled this thing out and tested it under pressure. It was leaking where the divider ribs stuck into the end tanks at 5 different locations from 2 different sides. Stick with Mishimoto and you will be happier.