Is your Chevy Silverado, GMC Sierra, Yukon, or Suburban with a 5.3L or 4.8L engine running hot? This brand new aluminum radiator (part number 2423) is a direct fit replacement! Key detail: This one does NOT have the engine oil cooler lines on the driver's side tank ('wo/EOC Lines'), so make sure that matches your truck. Dimensions: 34\ width, 17-1/4\ height, 1\ thick core. Inlet is 1-5/16\, outlet is 1-9/16\. Made by PE, it's a crossflow design, 100% leak tested, and durability tested. Includes a drain plug. Fits models from 2000-2011. Interchanges with part numbers 2423 and 2921, OEM 22840117. Comes with a manufacturer warranty. Note the California Prop 65 warning. If your old radiator is leaking or clogged, swapping in this quality aluminum unit will restore your cooling system's efficiency. A critical repair for keeping your truck on the road.