Thetford parts reference
Thetford 638984
Kit Service Brnr Tube Replacement
638984 is the Thetford part number for the kit service brnr tube 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 621073, this is the number that part points to. Thetford marks it with “USE 638984”, so 638984 is the one to order.
Which parts lists carry this number
It appears on the parts list for the N300 / N400.
Where this comes from
- Document
- PL_N300N400_619128_20221104.pdf
- Published by
- Thetford
- Retrieved
- 2026-08-28
- File checksum (SHA-1)
384e5dea87440c4310a5d332983ce86412ae75c5
What we have not checked
We can show you that 638984 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 That depends on your model year, build date and what is actually installed, and we do not publish a fitment claim until we can show it in the manufacturer’s own document.
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