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HVAC vacuum actuator arm rivet — source image

Design by forwardobi · Original design · CC-BY-SA-4.0 · Source details. Indexed via 3DCarParts. Source text and images remain credited to their creators; no modified design files supplied.

Designer source image. It may show an installed part, prototype or render; it is not an Orphaned Parts production sample.

DESIGN LIBRARY · interior

HVAC vacuum actuator arm rivet

HVAC vacuum actuator arm rivet design listed for 1985 Mercedes-Benz W123. Listed category: interior. Verify dimensions, fitment and material suitability before printing.

Make
Mercedes-Benz
Model
W123
Year range
1985
Submodel
Not supplied
Engine
Not supplied
Fitment review needed

Source approval status: pending. Source flags do not certify fit, material suitability or safety for your vehicle.

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License conditions, files, application and fit are reviewed before work is accepted.

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Description

I made these little plastic rivets to replace the broken pins on the arms of my vacuum flap actuators on my Mercedes. These fit through the little hole on the end of the vacuum actuator arm. I could have used a screw but I wanted a more elegant solution similar to the original fastener.

I made two types. One with the expanding mushroom head. The other with a groove and C-clip. Both work well on my Main air flap behind my glove box on my 1985 Mercedes 300D. I had to drill out the existing plastic rivet that had broken apart. I used a 13/64" drill bit on the plastic arm to make a hole. It's roughly 5mm which is the nominal diameter of the pin and hole on the arm.

Source description, under the recorded CC-BY-SA-4.0 license.

Print instructions

Standard FDM printing settings:
- Layer height: 0.2mm
- Infill: 70%
- Supports: As needed

Settings from the source; not independently tested by Orphaned Parts.

CHOOSE YOUR FILAMENT

Print price estimates

Planning prices for one print, not a final quote. Defaults use a size allowance inferred from the part name, not a measured or sliced model. Filament suitability must be confirmed.

FilamentUSD / printApplication notes
PLA$28.50Indoor prototypes; not a default material for hot vehicle interiors.
PETG$29.00General-purpose candidate; heat and creep need review.
ASA$32.50Candidate for UV exposure; verify temperature and geometry.
ABS$31.50Enclosed printing; review application and dimensions.
TPU$37.50Flexible designs only; not a substitute for rigid materials.
Nylon$37.50Moisture, tolerances and application require review.
PA-CF$42.50Filled nylon; abrasive filament and fit need review.
Pricing assumptions and exclusions

USD: ($6 setup + $3 finishing + filament weight × assumed spool cost × 1.25 waste allowance + print hours × $2.50 × material time factor) ÷ 0.65. Rounded up to the next $0.50.

Assumed spool costs per kg: PLA $25, PETG $30, ASA $40, ABS $30, TPU $45, Nylon $65, PA-CF $95. Time factors: PLA/PETG 1.0, ASA/ABS 1.2, TPU 1.6, Nylon 1.4, PA-CF 1.5. These are proposed shop rates, not measured production costs.

Design work, test fitting, hardware, shipping and tax are additional where needed. Multi-file sets may need several prints. Use actual sliced weight and time when available. Final pricing is confirmed in writing.

All available source data
Id
4396655a-b3b4-4931-8fc1-631e73d15cbd
Part Name
HVAC vacuum actuator arm rivet
Slug
hvac-vacuum-actuator-arm-rivet
Category
interior
Cswp Approval Status
pending
Download Status
approved
Make
Mercedes-Benz
Model
W123
Year
1985
Year End
Not supplied
Submodel
Not supplied
Engine
Not supplied
Created At
2026-07-08T05:54:41.601836+00:00
Origin
aggregated
Source
thingiverse
Source Url
https://www.thingiverse.com/thing:7311295
Source Creator Url
https://www.thingiverse.com/forwardobi
Cc License Code
CC-BY-SA-4.0
Cc License Url
https://creativecommons.org/licenses/by-sa/4.0/
For Sale
No
Fulfillment Mode
platform
Manual Price Cents
Not supplied
Image Url
https://r2-upload.3dcarparts.workers.dev/file/parts/4396655a-b3b4-4931-8fc1-631e73d15cbd/images/hvac-vacuum-actuator-arm-rivet-1_1783490082545_ukhdjl.jpg
Author
forwardobi
Estimated Price Cents
Not supplied
HasMultipleModelFiles
No
ModelFileCount
0
Download Count
0
Detail Url
https://3dcarparts.org/library/1985/Mercedes-Benz/W123/hvac-vacuum-actuator-arm-rivet

Source price fields and sale flags are metadata, not our selling prices. Their currency was not specified in the catalog. File counts do not mean files were downloaded or tested. No manufacturer savings or discontinued status is inferred.

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