$349 Complete and Sectioned Afterburning Turbofan Engine 3D model by 3D-Horse. Available on CGTrader with 5500000 polys and 5500000 vertices. Geometry: Polygon mesh. Check it out on CGHub.
OBJ (OBJ, filesize: 297 MB), MAX (Autodesk 3ds Max, filesize: 694 MB), HRC (Autodesk Softimage, filesize: 423 MB), LWO (Lightwave, filesize: 132 MB), 3DS (3D Studio, filesize: 88.3 MB)