Thetford parts reference
Thetford 638815
Kit Service Door Gasket Replacement
638815 is the Thetford part number for the kit service door gasket replacement. 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 623979, this is the number that part points to. Thetford marks it with “USE 638815”, so 638815 is the one to order.
Which parts lists carry this number
It appears on the parts list for the N260 Series.
Where this comes from
- Document
- PL_N260_619261_20191024.pdf
- Published by
- Thetford
- Retrieved
- 2026-08-28
- File checksum (SHA-1)
4a0b8849897d1478ced0d6405b70b9f6b1a4263b
What we have not checked
We can show you that 638815 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 That depends on your model year, build date and what is actually installed, and we do not publish a fitment claim until we can show it in the manufacturer’s own document.
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