This 3D model was originally created with Fusion 360 and then exported to 3 format. IGES, STP, and SATrendered in Keyshot 8.2tank and the engine is one object, air compressos belt, hose, is separate model.
IGE (IGES, filesize: 23.1 MB), STP (STEP, filesize: 16.5 MB), SAT (3D ACIS, filesize: 25.2 MB)