OzCoolingParts 4 Row Core Aluminum Radiator for 1973-1991 74 75 76 77 85 86 GMC Chevy C/K/P/R/V Series C10 C20 C30 K10 K20 K30 C25/C2500 Pickup/K25/K2500 Suburban Pickup Trucks, V8 (4 Row Core)