Can Thetford Cassette Model C402C Replace L Model

Updated 06/18/2025 | Published 09/25/2024

Question:

I need a Thetford cassette toilet, model C 402 L. Is your C 402 C compatible?

asked by: Ken K

Expert Reply:

Hey Ken, thanks for reaching out!

Our Thetford C402C Cassette Toilet # TH39UE has the same dimensions as your L model so it can be used as a replacement.

expert reply by: Jon G

Bret W.

6/9/2025

Hello, I have the Thetford C400 Cassette but the flapper/green knob mechanism needs to be replaced. I have a Nucamp Tab 320s Boondock edition and the cassette loads on the "driver" side of the trailer. I am a bit confused since it seems like there is a Left side part and a right side part. Which one do I need to get? Thanks...

Jon G.

6/18/2025

@BretW Can you send me a photo of what you're needing to replace? My email address is [email protected] I reached out to my contact at Thetford but I don't think they're familiar with the part you're talking about.