21-Inch Aluminum Radiator

The Cold Case Radiators 21" Aluminum Performance Radiator (GMT556A21K) is engineered to maintain optimal coolant temperatures for your 1977-1987 Chevrolet C10, especially during demanding use. Constructed from 100% TIG-welded aluminum, this radiator incorporates dual 12-inch fans and shrouds that deliver an impressive airflow of up to 3,200 CFM per fan, ensuring efficient cooling. It features two 1-1/4 inch tubes and 16 corrugated fins per inch, which increase surface area and enhance thermal transfer for superior heat dissipation. The radiator also boasts polished OE-style tanks. Key specifications include a core height of 18.8 inches, a core width of 28.35 inches, and an overall thickness of 3 inches. The overall dimensions are 21 inches in height and 34.33 inches in width. The upper hose connection is 1-1/2 inches, the lower hose connection is 1-3/4 inches, and it includes a 5/16-inch inverted flare fitting for the transmission cooler.