Peterbilt 351 (Smarty) for American Truck Simulator
Smarty's Peterbilt 351, successor to the 350: double-reduction chassis for period engines or Hendrickson and Stabilaire setups for modern ones. v1.2, free.
Download Peterbilt 351 (Smarty)
More screenshots on scr-rigs.com (author's website; also on Steam Workshop) ↗
What this mod does
Peterbilt 351 is the second chapter in Smarty‘s series of classic Peterbilts. The author presents it as a worthy successor to the 350 and points out that this truck, sold between 1954 and 1976, starred in one of its most famous movie appearances.
What it offers
- Standard chassis with Rockwell SLDD double-reduction axles and low ratios, from 4.68 to 5.90, designed for period engines.
- Alternative chassis with Hendrickson RS or Stabilaire suspension and SQHD axles, with ratios from 3.70 to 4.63, which pair better with modern engines.
- Engine sound using Kriechbaum samples.
- Paint templates on the author’s website (May 2024 version).
Current version
Version 1.2 is the one listed in the thread, dated August 9, 2026, and it’s 80.96 MB. The author doesn’t state the game version, but the date corresponds to the ATS 1.60 era. Smarty only publishes on Steam Workshop and scr-rigs.com.
Recommended pairings
If you want Eaton transmissions with real naming, Real Eaton Fuller Transmissions has included this truck since January 2026. Smarty also publishes a Wheel Pack with period wheels and tires, although the thread doesn’t say whether they’re assigned to this truck.
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User rating
Highlights and things to keep in mind
- A 1950s-70s classic with well-documented chassis options
- Updated in August 2026
- Direct download from the author's website
- The author doesn't state the ATS version; 1.61 isn't confirmed
- With the standard chassis it's a slow truck by design
- The thread doesn't detail specific engines or transmissions
Requirements
- American Truck Simulator 1.60 or later (August 2026 version; the author doesn't give an exact game version)
- No DLC or additional mods according to the author
How to install it
- Open the Peterbilt 351 page on scr-rigs.com or subscribe on Steam Workshop from the forum thread.
- Download scr_peterbilt_351.zip (80.96 MB).
- Copy the .zip, without unzipping, to Documents/American Truck Simulator/mod.
- Enable the mod in the Mod Manager and load your profile.
- Pick the chassis to match the engine: SLDD for old engines, Hendrickson RS or Stabilaire with SQHD for newer engines.
Version history
-
1.29 Aug 2026Current
Latest released version (the thread doesn't detail the changes)
Common problems
Which chassis should I choose?
With old engines, the standard double-reduction one; with modern engines, the Hendrickson RS or Stabilaire suspension ones with SQHD axles.
Does it work in ATS 1.61?
The author doesn't say; the latest version is from August 9, 2026, before 1.61.
Where can I download it without Steam?
On scr-rigs.com, the author's website, with no middlemen or ads.
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