Staff Answer
Sep 08, 2026 - 08:00 AM
The Thetford 20063874 is the replacement holding tank only for a Thetford C4 Cassette Toilet, specifically the right-hand configuration.
It looks like the complete C4 toilet itself is an older model that Thetford discontinued; Thetford indicates the C2/C3/C4 series was last produced in 2006. As a result, we do not have a complete new C4 toilet to pair with this tank.
If you are looking to replace the entire toilet rather than just the holding tank, we would recommend moving to a current Thetford cassette-toilet system, like the Thetford/ Norcold 49996 cassette toilet.
Add New Comment