Peterbilt 379 "Black Cat"

A dedicated LEGO builder has unveiled a major redesign of their custom Peterbilt 379 "Black Cat" truck MOC (My Own Creation). Originally shared last year, the iconic semi-truck received a comprehensive overhaul to correct its proportions and enhance overall realism, resulting in a significantly more accurate and polished final model.

The creator executed several key structural modifications to improve the truck's appearance and durability. The entire body—including the hood, mudguards, and cab—now sits one plate lower to fix previous proportion issues. Additionally, the chassis frame was completely rebuilt to be one stud longer and much stronger, specifically to accommodate a newly redesigned, more realistic sleeper that mimics the Peterbilt 48-inch flat-top sleeper option.

To achieve authentic detailing, the builder utilized parts from outside the standard build, including three thin silver stripes borrowed from a Speed Champions Aston Martin sticker sheet to accent the front grille and finalize the distinct Peterbilt 379 look. While this is a custom fan creation rather than an official retail set with a specific set number, piece count, or price tag, the builder has shared additional photos and models on their Flickr and Instagram pages for fellow truck enthusiasts to admire.

MOC builds like this highlight the incredible creativity within the LEGO community and often inspire builders to tackle their own heavy-duty vehicle projects. If you plan on designing or modifying your own custom semi-trucks, you might want to pick up an LEGO storage box to keep your spare plates and Technic chassis pieces organized.