Peterbilt 389 STL 3D Print Model

The Peterbilt 389 is an iconic American long-nose Class 8 semi truck tractor, faithfully recreated as a highly detailed 3D printable model. The model features the characteristic sloped hood, vertical exhaust stacks, large fuel tanks, sleeper cab, full dual rear axle assembly with mudflaps, fifth wheel coupling, and a windowed/lights variant included in the package. Designed for display modeling, dioramas, or RC-scale projects, it is provided in STL format ready for slicing. Two versions are included: a solid bodywork version and a windowed/lights version for added realism.

Print settings

FDM printing is recommended for most parts; resin printing will better capture fine details such as the grille louvers, exhaust stacks, and mud flap textures. Print the cab and hood upright or at a slight rear tilt to minimize supports on the windshield area; the fuel tanks and axle assemblies print best flat. Use supports for the exhaust stacks and mirror arms. Recommended infill 15–20% with a 0.2 mm layer height; PLA or PETG are suitable materials for a display model.