Mechanical — 3D-printable Mercedes-Benz parts

Flexible replacement tether published specifically for this generation. The creator requires TPU and instructs removal of the lid pin and remaining old tether before fitting the new piece snugly around the fuel cap without affecting its seal. Compare the pin, cap eye, tether length and filler-lid clearance, use fuel-vapour-, UV- and weather-resistant TPU and confirm the tether cannot enter the filler neck or prevent the cap from sealing completely.

Two-piece replacement housing for the starter cable connector on a 2006 SLK 350. The creator modeled it after the original housing crumbled, printed it successfully in ABS, and warns that its position under the exhaust manifold exposes it to substantial heat. Use both housing halves, print only in a suitable high-temperature electrical-insulating material, inspect the cable and terminal for heat or corrosion damage before installation, maintain factory routing and insulation clearances, and discontinue use immediately if the print softens, cracks, or allows terminal movement. Fitment is source-backed only for the stated 2006 SLK 350 within R171.

Replacement latch clip for the engine-compartment electrical fuse box, identified by the creator as the exact serviced child. Source photographs compare it with the original and show it retaining the lid. Print in engine-bay-temperature-resistant PETG, ABS or nylon, verify the box and latch version, and confirm the lid seals and remains secured without pinching wiring.

Flexible replacement tether for the fuel filler cap, created after the original tether failed and shown installed on the filler door. Print in fuel-, UV- and weather-resistant flexible material, preserve the cap sealing surfaces and venting, keep the tether clear of the neck and hinge, and confirm the cap still seals and locks normally.

Replacement wing nut used on several battery and storage-compartment covers. Source imagery shows the installed fastener location and the loose printed geometry. Match the original thread and cover version, print in tough cabin-heat-resistant material, do not force a mismatched thread, and tighten only enough to retain the non-structural cover without cracking it.

Protective cap for the exposed upper shock-absorber bolt, shown installed by the creator and printed in PETG to tolerate engine-bay heat. The source gives no suspension variant, bolt dimensions or OEM reference. Compare the bolt and surrounding travel envelope, use engine-bay heat-, fluid- and vibration-resistant material and verify the cap cannot loosen, trap corrosive moisture or interfere with suspension inspection or service.

Replacement flexible tether for the fuel-filler cap, published specifically for this generation. The source contains a printable model and CAD source image but no cap revision, material or durability test. Compare both attachment eyes and tether length, print in fuel-vapour-, UV- and weather-resistant flexible material and verify the tether cannot enter the filler neck or prevent complete cap sealing.

Flexible replacement mount for the diesel air-filter housing, printed and reported satisfactory by the creator. The exact serviced child is Mercedes A6110940385, independently corroborated as an air-filter housing elastomer mount for W203 C200 CDI, C220 CDI and C270 CDI applications; A6110940085 appears as a related alternative reference but is not assigned. Use engine-bay temperature-, oil- and ozone-resistant elastomer, compare the original mount and engine application, fit both required mounts and verify the housing remains secure without transmitting abnormal vibration.

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.

Standard- and loose-fit replacement grommets for mounting the hydraulic self-levelling suspension oil reservoir on estate cars. The creator identifies the exact child as A1299971681. These grommets support only the reservoir, not a suspension load path. Use oil-, heat- and vibration-resistant flexible material, match the mounting hole and reservoir pin, and inspect for leaks and secure retention after installation.

Replacement grommet through which the radiator lower locating prongs pass. The source establishes 124-series fitment but provides only model imagery. This grommet isolates and locates the radiator; it is not a structural vehicle mount. Compare the original opening and radiator pin, use engine-bay heat-, coolant- and vibration-resistant flexible material, and confirm secure seating, fan clearance and leak-free hoses after installation.

Direct replacement for the lower condenser mounting grommet identified by the creator as A2019970381. The source model intentionally simplifies fillets and tightens the fit for printing. Compare the original grommet and condenser pin, use heat-, weather- and vibration-resistant flexible material, and confirm the condenser is retained without metal-to-metal contact or stressed refrigerant lines.

Replacement clip used in pairs to secure the lower engine wiring harness to the engine block; the creator notes that the same size also appears elsewhere. Exact routing varies with engine and model year, so compare the original clip and mounting point rather than inferring other positions. Use engine-bay heat-, oil- and vibration-resistant insulating material, avoid sharp wire contact and confirm the harness cannot reach hot or moving parts.

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.

Spacer ring developed to retain a near-match replacement dust boot on a 126-series rear self-leveling-suspension hydraulic strut when the original boot is unavailable. Source photographs show the physical ring and boot installation. This is a protective-boot adapter only, not a suspension load path. Match the replacement boot and strut dimensions, use oil-, weather- and fatigue-resistant material, and inspect hydraulic lines, clearance, leaks and boot retention before returning the car to service.

Flexible downward-facing bell for the fuel-tank vent line, recreated after rodent damage on a 300CD/T/D application. The creator printed it in flexible filament at 100% infill and describes a friction fit on the black 90-degree elbow. Use fuel-vapour-compatible material, preserve an open vent path, secure the bell against loss and stop if tank venting, odour or leakage changes.

Replacement lid modelled for the fuse box on a 230E. Other engines are explicitly untested, so fitment is restricted to the demonstrated configuration. Reuse the original gasket and fuse-card insert as instructed, print in engine-bay heat-resistant material, verify full sealing and latch engagement, and never install a warped lid that could admit water or contact fuses.

Replacement 4 mm plastic locking pin for electrical sensor connectors and the Stromberg 175 carburettor valve connector. The creator demonstrates the printed pin with the original sensor fittings. Match the connector body and pin diameter exactly, use engine-bay heat- and fuel-resistant material, route wiring without strain and confirm the connector cannot loosen or short before operating the engine.

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.