Thetford parts reference
Thetford 637088
Fan Assy
637088 is the Thetford part number for the fan assy. It is printed in Thetford’s own parts documentation, which we hold a copy of and link below.
Thetford says to use 637283 instead
Thetford marks this number with “USE 637283” on its own parts list, which is the manufacturer telling you 637283 is what to order now. That instruction comes from the document, not from us, and not from what sellers happen to call the part.
Current number: 637283
Which parts lists carry this number
It appears on the parts list for the 2118 Series.
Where this comes from
- Document
- PL_2118_637110_022025.pdf
- Published by
- Thetford
- Retrieved
- 2026-08-28
- File checksum (SHA-1)
9e1199a334ca2e63c02f6952e9b7ff71703ec017
What we have not checked
We can show you that 637088 is a real Thetford number, what Thetford calls it, and which parts lists carry it. We have not verified that it fits your camper. That depends on your model year, build date and what is actually installed, and we do not publish a fitment claim until we can show it in the manufacturer’s own document.
Current marketplace inventory
Listings from eBay
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