71-73 Mustang Radiator AT 26in

The 71-73 Mustang Radiator AT 26in from Cold Case Radiators is a modern aluminum cooling solution engineered for first-generation Mustangs running automatic transmissions. As a seasoned mechanic, you know that original cast-iron radiators struggle to manage heat in today's driving conditions, especially during spirited driving or summer cruising. This unit replaces that weak link with all-aluminum construction designed to shed engine heat efficiently while maintaining period-correct aesthetics under the hood.

Built with polished aluminum cores and tanks, this 26-inch radiator features passenger-side inlet and driver-side outlet orientation, matching OEM flow paths to eliminate custom plumbing headaches. The lightweight aluminum design—tipping the scales at just 23 lbs—reduces unsprung mass while the increased surface area dramatically improves heat transfer compared to original equipment. Aluminum also resists corrosion that plagued old iron cores, meaning you're installing a radiator that will outlast multiple engine rebuilds without internal decay or pinhole leaks.

If you're restoring a 1971–1973 Mustang with an automatic transmission, this is the cooling upgrade that lets you keep your stock engine bay appearance while gaining genuine cooling performance. The polished finish integrates cleanly with show-quality restorations or daily drivers alike. Installation is straightforward—existing mounting points align perfectly, and the inlet/outlet configuration matches your transmission's cooler lines, saving hours of fabrication time and potential coolant leak points.