This is a file create by IM9241221 on Sketch fab in FBX format. I have convert it to stl format and resized to 1/25th or close to it. Best printed with resin printer. Note the fan on my engine didn't come out well as a few small parts. I am going to redo the fan and print it separately. So, print with caution, you have been warned.

The original files are found here and credit to the designer, awesome job and very detailed at, look for detroit diesel engine,in sketch fab, 3d-models/detroit-diesel-engine-9cb230e23a7248778c1daa0b031ddeba

Update: 2/15/25 Added 2 piece set up, made this easier to print or play with in cad programs, Although this is less detailed due to reducing mesh size.New files under Rev A

Update: 4/20/24 Added 2 fan versions, one has a 3 mm stub and the other with no stub. This based on the original fan, I redesigned the whole fan to have a bit of thickness, enough to be printable.