$149 Red Car Engine 3D model by 3D-Horse. Available on CGTrader with 288392 polys and 302542 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 17.7 MB), 3DM (Rhinoceros 3D, filesize: 7.71 MB), 3DS (3D Studio, filesize: 2.69 MB), HRC (Autodesk Softimage, filesize: 12.4 MB), LWO (Lightwave, filesize: 3.21 MB), OTHER (Other, filesize: 19.8 MB), DXF (DXF, filesize: 9.68 MB), MAX (Autodesk 3ds Max, filesize: 19.7 MB), FBX (Autodesk FBX, filesize: 113 MB), MA (Autodesk Maya, filesize: 18.1 MB), C4D (Cinema 4D, filesize: 3.11 MB), DWG (AutoCAD, filesize: 10.5 MB), UNITYPACKAGE (Unity 3D, filesize: 104 MB)