ECMRAD Aluminum Radiator is produced and designed to provide maximum cooling efficiency to prevent engine cooling failure. It is made of full aluminum 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. It has an increased durability over the factory plastic end tank radiator, and much inmprovwed engine cooling. Most importantly, it has a much higher capacity for coolant than stock ones, which means that your cooling system will be more efficient and will be more resistant to temperature surges in racing applications. This Aluminum Radiator Compatible for:for Chevy Blazer 5.0L 5.7L V8 1987-1991 for Chevy K5 Blazer 5.0L 5.7L V8 1981-1986 for Chevy C/K Series Pickup / Suburban 5.0L 5.7L 7.4L V8 1973-1987 for GMC C/K Series Pickup / Suburban 5.0L 5.7L 7.4L V8 1973-1987 for GMC Jimmy 5.0L 5.7L V8 1981-1991 Radiator Size Details:Core Size: 19inch high x 28-1/2inch wide x 2 1/4inch thick Overall Size: 20-1/4inch high x 33-1/4inch wide Surface finish: Aircraft 5057 grade aluminum tank & core Radiator Cap: CNC machined filler neck and cap Aircraft 5057 grade aluminum and with raw aluminum finish Petcock Drain: OEM style brass petcock drain Trans Cooler Details are: Included, WILL FIT AUTOMATIC OR MANUAL TRANSMISSIONS Package Included:1 X 3-Row Aluminum Radiator w/ Radiator Cap in a Carton Box 1 X Aluminum Shroud 2 X 12inch Fans (Includes mounting kits) 1 X Thermostat Relay Wire harness Kit in a Carton Box