Description: 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 40% more efficient than stock ones. 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. 100% Brand new and never been used. Made of High Quality Full T-6061 Aluminum Construction Stronger and Higher Capacity for Coolant than Stock Units Core Size: 19" high x 28-1/2" wide x 2 1/2" T Overall Size: 20-1/4" high x 33-1/4" wide x 5.04" T Upper inlets: 1 1/2" located on the driver side Lower outlets: 1 1/2" located on the passenger side Transmission: Automatic and Manual. Direct Bolt-On OE Fitment or Replacement Improves Cooling by 35% to 45% Temperature Professional Installation is Highly Recommended No Instruction Included Package includes: 1X Aluminum Racing Radiator Just as pictures show Fitment: For 1981-1991 Chevy Truck (21" x 33") For 73-91 Chevy Suburban For 73-91 Chevy Blazer / Jimmy For 73-87 Chevy Pickup Trucks For 81-90 GM Truck 5.7 7.4 For 85 86 GMC C2500 C3500 K1500 K2500 For 81-90 Chevy R Series For 81-90 Chevy K Series For Chevy For GMC Blazer Jimmy Suburban For 73-87 Chevy Truck, 73-91 Blazer (19 x 28-1/4" Core) For 85 86 87 Chevy Pickup Truck 19" Core For 73-91 Chevy C/K Series Trucks For 73-81 K5 Blazer For 73-80 CHEVY C/K SERIES C10/C20/K10 PICKUP For the year and models, please check the compatibility