Thetford's Porta Potti 365 is a self-contained portable toilet with a manual piston flush and a removable waste tank. Its parts illustration also includes the older 365 MSD marine arrangement, so check your toilet version before selecting the pump, cap or hold-down hardware.
Porta Potti 365 and matching lip seal
Porta Potti 365 exploded parts diagram
Find the numbered callout in Thetford's original drawing and match it to the part reference below. The PDF covers the post-2006 Porta Potti 365 and the earlier 365 MSD; not all pictured fittings appear on both versions.
Manufacturer part numbers
The original list identifies each assembly, including parts exclusive to the older 365 MSD configuration. Thetford marks some items as limited availability or unavailable; check the exact number and existing part before ordering.
| Drawing no. | Thetford number | Part or assembly |
|---|---|---|
| 1 | 0733179* | White seat and cover; original 07331 was superseded |
| 2 | 25818* | Manual piston pump assembly |
| 3 | 35804* | No-spill fresh-water filling cap |
| 4 | 07101 | Waste-tank lip seal. View Thetford 07101 |
| 5 | Not listed | Pump-out spout shown for earlier 365 MSD configuration; not a standard later 365 component |
| 6 | 92922111 | Hold-down kit for the older 365 MSD installation (formerly 35801) |
| Not shown | 29311 | Flush tube; manufacturer lists as unavailable |
| Not shown | 0749262 | Pour-out spout, replaces original 07492 |
| Not shown | 0749362 | Pour-out spout cap, replaces original 07493 |
Check which model you have
The regular Porta Potti 365 uses a manual piston-pump flush. The original 365 MSD marine version can have pump-out and hold-down hardware that a standard 365 does not. Check the data label, waste-tank fittings and existing flush mechanism before choosing parts.