Mechanical — 3D-printable Mercedes-Benz parts

Two internal replacement parts for the gear-selector mechanism. The creator identifies exact chassis fitment, supplies a physical source photograph and states that one O-ring is required to retain the assembly. The archived files were 3MF containers carrying misleading STL extensions and are preserved for upload with corrected .3mf filenames. Compare both original profiles and the selector version, use tough cabin-heat- and wear-resistant material, fit an oil-compatible O-ring of the correct size, and verify every gear position, detent, indication and interlock repeatedly with the vehicle stationary before road use.

Two-piece replacement shaft set for the mechanical speedometer drive. The creator printed it in PETG with a 0.2 mm nozzle, reports about 1,500 km of successful use, and notes that axle sanding may be required. The cited EPC number describes the complete speedometer-drive component and is not assigned to these printed internal pieces. Match the transmission drive version, avoid altering tooth geometry, and verify accurate speed indication and leak-free operation.

Replacement automatic gear-selector linkage bushing printed for a degraded original on a 123-series car. The creator shows the part at the linkage and notes that a 1/4-inch E-clip can replace a missing retaining clip. Use a wear-resistant material, retain the linkage securely, then verify every selector position, positive Park engagement and neutral-start behavior with the parking brake applied before driving; stop use if the linkage binds or develops play.

Replacement frame fitted beneath the rubber gear-selector boot to retain it in the centre console. The creator explicitly identifies 107-series SL and SLC fitment and designed it because the original retainer was unavailable. Compare the selector opening and boot lip, use heat-resistant material, and confirm unrestricted selector movement through every position before driving.