Is this 3D model free to download?

Yes, 6 Speed Allison Automatic Transmission / Gearbox is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by InterlinkKnight, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

6 Speed Allison Automatic Transmission / Gearbox 3D printable model by InterlinkKnight

6 Speed Allison Automatic Transmission / Gearbox photo 1

6 Speed Allison Automatic Transmission / Gearbox photo 2

6 Speed Allison Automatic Transmission / Gearbox photo 3

6 Speed Allison Automatic Transmission / Gearbox photo 4

6 Speed Allison Automatic Transmission / Gearbox

Source: Thingiverse by InterlinkKnight

The 6 Speed Allison Automatic Transmission / Gearbox is a free printable 3D model from Thingiverse by InterlinkKnight. This model is base on the Allison 1000 automatic transmission. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

1,413 saves Source: Thingiverse Updated 2026-10-22 License: CC-BY-NC · non-commercial Category: Toys & Games

Tags: 6 speed, allison, Automatic, car, engine, gearbox, transmission

About this model

This model is base on the Allison 1000 automatic transmission. Is not an exact replica but the basic design and functionality are the same. The most significant difference from the real transmission is the C1 and C2 clutches that I design to work with 3D printed parts and solenoids. Assembly video: Gear ratios: 1st: 3.20 2nd: 1.86 3rd: 1.43 4th: 1 5th: 0.70 6th: 0.60 R: 4.41 I made the lower part of the case quite big so there's room to put solenoids to engage all the clutches and even a parking pawl to control them with switches or even change gears automatically with something like Arduino. The selector 3D model is here: For more information about how to make the electrical part to control the solenoids, go to my project page where I show the circuit diagram and arduino sketches: There i…

Frequently asked questions

Is this 3D model free to download?: Yes. 6 Speed Allison Automatic Transmission / Gearbox is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by InterlinkKnight.
Who made this model?: Designed by InterlinkKnight, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.