Much of my personal US1 Trucking set is original from the 1980s. Recently I decided to get it out of the storage tote and set it up. I quickly realized that some vital parts were missing like the backstop for the car unloader accessory. Without this small plastic piece, the cars will not unload from the trailer! After a little research, I discovered that there are free 3-D files for many of these parts! You can download the .STL file and print these on your own 3D printer, or you can take them to a local 3D print shop or upload the .STL file to an online printer like Shapeways!

Tyco Us1 Operating Log Loading Bulldozer 3D Printed Automatic Reverse Retractor Modification #3415

Tractor Self-Reset

Tyco US1 Tractor Self-Reset Modification. Allows the tractor to return to its original position without pushing it back. This is a must-have IMHO. I never liked forcing the bulldozer back into place! Check out our installation video and demonstration of this cool US1 Trucking mod!
Buy NowDownload Now

Box Unloader Sign

Box Unloader Sign

The sign was easily broken over the years. I suggest printing this with White Natural Versatile Plastic for the least expensive and smooth texture. The other methods look grainy and ridiculous. 
Buy Now Download Now

Auto Unloader Backstop

Replacement backstop

Replacement backstop for your autoloader.  Order in orange processed versatile plastic for a closer match. You will need to download the STL file and upload it to buy this part. 
Upload & Print Download Now

Freight Terminal Roof Building Replacement

Freight Terminal Roof 

I have two freight terminals. The roof was missing on one. You can buy the roof & building separately or download both files below.
Buy NowDownload Now

Freight Terminal Building

Freight Terminal Building

I have two freight terminals. The roof was missing on one. You can buy the roof and the building separately. The download file has both pieces.
Buy Now Download Now

Airport replacement radar

airport radar

The back of the radar was easily broken or lost. This is two separate pieces. Thanks to Thomas M. for this 2023 contribution for 3D replacement parts! 
Upload & Print Download Now

Shell Tyco Wrecker Light Bar and Gears

Wrecker Light Bar, Wheels & Gears

This semi-transparent part contains 2 light bars, 3 geared wheel hubs, 2 non-geared wheel hubs, and 1 high-resolution gear for the Tyco Wrecker.
Buy Now

Tyco US-1 Trucking Gears

9 Gear Sets

Set of 9 gear pairs for use with Tyco US-1 Trucking vehicles. The gears will be printed on a support structure (sprue). It's common that the sprue might break off in the gear. As you push the motor or wheel shaft into the gear, the sprue will be pushed out the other side.
Buy Now Download Now

27 Spur Gears

27 Spur Gears

27 spur gears. Sometimes the plastic shaft holding the gears can break off inside a gear instead of easily sliding out Use a paperclip, motor shaft, to push it out & clear the axle hole.
Buy Now