Thetford parts reference
Thetford 637164
Kit-Water Valve-Dispenser/Double Port
637164 is the Thetford part number for the kit-water valve-dispenser/double port. It is printed in Thetford’s own parts documentation, which we hold a copy of and link below.
Thetford says to use 637166 instead
Thetford marks this number with “USE 637166” on its own parts list, which is the manufacturer telling you 637166 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: 637166
Which parts lists carry this number
It appears on the parts lists for 3 different models: 1200 Series, 1210 Series and 2118 Series. A number shared across several models usually means the component was carried over between them, which is useful when the exact list for your model is not the one you can find.
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 637164 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 That depends on your model year, build date and what is actually installed, and we do not publish a fitment claim until we can show it in the manufacturer’s own document.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
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