bing tracking image
Q & A Icon

Availability of Replacement Cap for Thetford Replacement Holding Tank  

Updated 01/06/2026 | Published 01/05/2026

Question:

Do you sell the dump cap separately? I got my pop up camper second hand and it’s missing the cap and I would like to get a cap so I don’t have issues with spills. See cap in photo attached

0
Holding Tank Cap
Holding Tank Cap
(click to enlarge)

Expert Reply:

Hey Eric! This wasn't a part we had so I went ahead and added it to our site for you. The cap is the Replacement Measuring Cup Dump Cap for Thetford Cassette Toilets # TH34FR65BX.

What kind of camper did you get?

expert reply by:
0
Robin H
Eric profile picture

Eric

1/6/2026

Hello Robin, I have a 2012 Jayco 1208. The label inside my cassette toilet door says it is a C402C R. The part you referenced says it’s a replacement for the C200S and C200CS. Would that fit mine, or is there a different cap for my situation? Thanks.

Robin H. profile picture
Etrailer Expert

Robin H.

1/6/2026

@Eric the # TH34FR65BX will still fit, this is straight off of the parts list from Thetford for the C400-series. Technically it is the 25810 but Thetford informed me that part is now obsolete and has been replaced with this which is the 2581078.
Eric profile picture

Eric

1/6/2026

@RobinH thank you for the explanation! Will be ordering this part!
Robin H. profile picture
Etrailer Expert

Robin H.

1/6/2026

@Eric you're welcome, happy to help.

Product Page this Question was Asked From