【Fitment】- Compatible with 00-07 GMC Yukon AT / 00-06 Yukon XL 1500 AT / 99-06 Sierra 1500 AT / 99-00 Sierra 2500 AT; Compatible with 02-05 Cadillac Escalade AT; Fits Automatic Transmission Models with 4.8L/ 5.3L V8 Engines ONLY 【Specification】- Overall Size: 34.00" x 19.00" x 2.25"; Core Size: 28.25" x 18.75" x 1.00"; Inlet/Outlet: 1.25"/ 1.50''; Transmission Cooler Thread Size: G1/8 【Construction】- Made of High Quality Full T-6061 Aluminum Construction; Bolt-On Aluminum Frame Fan Shroud 【Feature】- High Performance 2-Row Racing Design Radiator which Built-In Pull Fan; Stronger & Higher Capacity for Coolant than Stock Units; Improves cooling by 35 - 45% Temp 【Installation】Direct Bolt-On OEM Fitment or Replacement; Professional Installation is Highly Recommended (No Instruction Included)