Thetford parts reference
Thetford 638577
Kit Service Door Gasket Replacement
638577 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 624119 and 638641, this is the number those parts point to. Thetford marks them with “USE 638577”, so 638577 is the one to order.
Which parts lists carry this number
It appears on the parts list for the N180 Series.
Where this comes from
- Document
- PL_N180_638718_20181106.pdf
- Published by
- Thetford
- Retrieved
- 2026-08-28
- File checksum (SHA-1)
5659dcfdb60f035c43e509a12bb38b03223d4a9d
What we have not checked
We can show you that 638577 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 That depends on your model year, build date and what is actually installed, and we do not publish a fitment claim until we can show it in the manufacturer’s own document.
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