Dual 3.5" Dash Speaker Adapter – 1973-1979 Ford F-series
3D-printed replacement dual 3.5" dash speaker adapter made for the 1973-1979 Ford F-series: a simple way to replace a cracked, lost or hard-to-find original part.
About this part
This adapter lets you use two 3.5" speakers instead of a single 5x7 speaker in non-A/C equipped '73–'79 Ford trucks. The defrost vents get in the way so I had to run the speakers front to back instead of side by side. It might work on A/C trucks too, but I don't have one to test with.
Print in PETG or better so it survives the heat.
Requires:
6x E-Z LOK 240-332-BR 10-32 threaded inserts
4x #10-32 1/2in machine screws
2x #10-32 1in countersunk machine screws
Print with supports with around 40% or greater infill. When finished, place the threaded inserts into the holes split side out and then use a vise or pliers to seat them into the adapter. Attach your speakers with the 4x 10-32 machine screws and then fish the unit up into your dash and fasten it to the dash with the 10-32 countersunk screws. The stepped side points towards the rear of the truck to clear the bump for the dash pad. Enjoy
Compatible vehicles
- 1973-1979 Ford F-series
Always compare with your original part before ordering. Fitment can vary by trim level and production date.
Specifications
| Part | Dual 3.5" Dash Speaker Adapter |
|---|---|
| Make | Ford |
| Model | F-Series |
| Year | 1973 |
| Production | 3D printed to order (FDM) |
| Design files | 1 (STL) |
| Part number | CAT-0aec4a4a |
Print settings
Standard FDM printing settings:
- Layer height: 0.2mm
- Infill: 70%
- Supports: As needed
How to order
This part is in our catalogue and is printed on request. Send us a request with your vehicle details and we will reply with a price and delivery time.
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Design credit: original design on Thingiverse, licensed CC BY-SA-4.0.