Ram Promaster Fan Spacers for Maxxair Fan - image

Files (3)

FanAdapterRibSpacer.stl

STL

10.4 KB

FanAdapterURearLeft.stl

STL

18.1 KB

FanAdapterURearRight.stl

STL

17.3 KB

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STL file	Role	Source size	PETG / ABS 20%	PETG / ABS 25%	100% solid	Recommendation
FanAdapterRibSpacer.stl	Accessory piece	10.4 KB STL	Slice file	Slice file	Slice file	Small functional file: print slowly; consider 80–100% infill for durability.
FanAdapterURearLeft.stl	Choose left variant	18.1 KB STL	Slice file	Slice file	Slice file	Small functional file: print slowly; consider 80–100% infill for durability.
FanAdapterURearRight.stl	Choose right variant	17.3 KB STL	Slice file	Slice file	Slice file	Small functional file: print slowly; consider 80–100% infill for durability.

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Mechanical/Functional

Ram Promaster Fan Spacers for Maxxair Fan

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Description

This is a 3D printed spacer to be used on the roof of a Ram Promaster van when installing a Maxxair fan. The ribs of the van's roof require some sort of spacer unless you want to fill the gaps with large amounts of sealant. Spacers are available online for $50 but these do the job just fine for much less. Most locations will probably use 6 rib spacers. My van is the extended version and I decided to place the fan right next to the seam between the roof panels so I needed the additional U shaped spacer to fit in that location.I used petg but the Silicone 2 I used to seal the vent doesn't really stick to it so ABS might be better. It's encased in sealant so it shouldn't be a problem either way.

Compatible Cars

RAM ProMaster

Published Jun 27, 2026Updated Jul 15, 2026

Originally published on thingiverse.com by Bryant Tonkin (Brik2k) · License: CC BY

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