3Row Radiator Shroud Fan For Chevy C/K C10 C20 C30 K10/20 Pickup Truck 1973-1987Description: This Aluminum Radiator is designed to provide maximum cooling efficiency to prevent premature engine failure. Its light weight, and high heat transferring aluminum features a tube and fin design that, dramatically increases surface area that enables the heat to dissipate more efficiently. This Aluminum Radiator is at least 30% 45% more efficient than stock ones. Most importantly, it has a much higher capacity for coolant than stock ones,