The Thetford C200 S and CS cassette toilets combine a swivelling bowl with a removable waste tank. The original exploded parts sheet identifies the electric flushing valve, 3-amp fuse, blade handle, lip seal and other service items by number, making it easier to isolate the component that needs attention.
Original manufacturer exploded-view drawings
Find the numbered reference on the factory drawing, then use the table below to identify the original manufacturer part number. Open the full PDF to enlarge small components.
Manufacturer exploded illustration
Identify the waste-tank lip seal and pour-out cap
The lip seal and yellow pour-out cap are different C200 cassette-tank components. Compare the pictured part and its manufacturer number with your existing tank before ordering.
Numbered parts and original references
These are original parts references for the model or tank shown. Entries without a product link are included for identification; where NewRVParts has an exact-number match, you can review its listing.
| Callout | Original no. | Component | Product |
|---|---|---|---|
| 1 | 16833 | Vacuum breaker | |
| 2 | 23709 | Electric valve with hose nut and hose barb | |
| 3 | 2371374 | Moon-grey waste-blade handle | |
| 4 | 16451 | 3-amp fuse | |
| 4 | 33342 | Earlier fuse number, replaced by 16451 | |
| 5 | 23721 | Waste-tank lip seal, units built after June 15, 2000 | View matching part |
| 5 | 33361 | Earlier lip seal reference, superseded by 23721 | |
| 6 | 2334174 | Complete moon-grey holding tank | |
| 6 | 33209 | Earlier waste tank reference, superseded by 2334174 | |
| 7 | 2372274 | Moon-grey automatic vent; limited availability | |
| 7 | 33210 | Earlier vent reference, superseded by 2372274 | |
| 8 | 16195 | Spout cap seals (pair) | |
| 8 | 33333 | Earlier seal reference, superseded by 16195 | |
| 9 | 2133374 | Moon-grey cassette sliding cover | |
| 9 | 33203 | Earlier cover reference, superseded by 2133374 | |
| 10 | 2581078 | Yellow measuring cup, replaces 25810 | View matching part |
| 10 | 25810 | Earlier yellow cup number, superseded by 2581078 |
Check the right model and part
Confirm C200 S or C200 CS on the toilet identification label and check the cassette-tank generation. Thetford identifies lip seal 23721 for later C200 tanks, with a June 15, 2000 production changeover. Earlier versions may use a different seal. The C200 CW/CWE flushing hardware is not identical to the S/CS arrangement. For the yellow measuring cap, Thetford uses the later reference 2581078 in place of 25810.