Check out Game-ready radiator- 3 different materials 3D Model Collection 3D model on CGTrader for $12. High-quality mesh by nollieinward.
Native Formats: BLEND (Blender, filesize: 7.72 MB)
Exchange Formats: OBJ (OBJ, filesize: 2.28 MB), FBX (Autodesk FBX, filesize: 3.56 MB), STL (Stereolithography, filesize: 1.51 MB), TEXTURES (Textures, filesize: 120 MB)