Thetford parts reference
Thetford 33385
Seat and Cover Assembly - White
33385 is the Thetford part number for the seat and cover assembly - white. It is printed in Thetford’s own parts documentation, which we hold a copy of and link below.
Which parts lists carry this number
It appears on the parts lists for 3 different models: Aria Classic, Aria Deluxe and Aria Deluxe III. 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.
Check the version before you order
This part comes in more than one version, and they differ by colour. Ordering the wrong one gets you a part that is real, correct for the model, and still not the one you need. The other versions on the same documentation are listed below — check yours before ordering.
Availability
Thetford marks this number with an asterisk, and the legend on that document reads “LIMITED AVAILABILITY”. It is still a live number, but supply is constrained, so it is worth checking secondary sources rather than assuming it is freely stocked.
Where this comes from
- Document
- PL_AriaClassic_RevA_10122024.pdf
- Published by
- Thetford
- Retrieved
- 2026-08-28
- File checksum (SHA-1)
89f38e58cad20670bef071a24ca8087405b2d60d
What we have not checked
We can show you that 33385 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 That depends on your model year, build date and what is actually installed, and we do not publish a fitment claim until we can show it in the manufacturer’s own document.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
Listings from eBay
These results match your search terms. Camper Replacement Parts has not yet verified fitment or compatibility for this part.
Checking current eBay inventory…
Camper Replacement Parts is not the seller. Price, shipping, stock and item condition are set by the eBay seller and can change at any time. We may earn a commission if you buy through these links.