Komatsu HD605-8 Rigid Dump Truck (Polygon mesh 3D model) is available on CGTrader for $149. Original author: modelspro. Specs: 1203000 polys, 1161400 verts.
MAX (Autodesk 3ds Max, filesize: 75.1 MB), OBJ (OBJ, filesize: 29.7 MB), FBX (Autodesk FBX, filesize: 139 MB), MAX (Autodesk 3ds Max, filesize: 75.1 MB), C4D (Cinema 4D, filesize: 23.8 MB), MA (Autodesk Maya, filesize: 35.8 MB), 3DS (3D Studio, filesize: 13.6 MB), TEXTURES (Textures, filesize: 11.3 MB)