Thetford parts reference
Thetford 638285
Kit Service Lamp/Thermister Assy
638285 is the Thetford part number for the kit service lamp/thermister assy. It is printed in Thetford’s own parts documentation, which we hold a copy of and link below.
What this number replaces
If you were looking for 618548, this is the number that part points to. Thetford marks it with “USE 638285”, so 638285 is the one to order.
Which parts lists carry this number
It appears on the parts list for the N61/N81 Series.
Where this comes from
- Document
- PL_N61N81_623421_20220221.pdf
- Published by
- Thetford
- Retrieved
- 2026-08-28
- File checksum (SHA-1)
f361065fe67f44994b37aef701822f85979a9186
What we have not checked
We can show you that 638285 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 That depends on your model year, build date and what is actually installed, and we do not publish a fitment claim until we can show it in the manufacturer’s own document.
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