Dometic 972
972 portable toilet with 2.6 US gal removable waste tank, gray
View matching productDometic 972 vs 976 Portable Toilets: Photos & OEM Parts
The Dometic 972 and 976 are self-contained portable toilets with removable lower waste tanks, a pressurized freshwater rinse tank and push-button flushing. They use the same general upper section but have different waste-tank sizes and overall heights. A 972 tank is not the same numbered service part as a 976 tank.
View Available Parts With Photos
Choose the tank size and height
| Dometic specification | 972 short model | 976 taller model |
|---|---|---|
| Waste holding tank | 2.6 US gal (9.8 L) | 5.0 US gal (18.9 L) |
| Fresh flush-water tank | 2.3 US gal (8.7 L) | 2.3 US gal (8.7 L) |
| Overall height | 12½ in (317 mm) | 15¼ in (387 mm) |
| Overall width | 13⅛ in (333 mm) | 13⅛ in (333 mm) |
| Overall depth | 15¼ in (387 mm) | 15¼ in (387 mm) |
| Discharge method | Manual rotating spout | Manual rotating spout |
The flush-water capacity is identical, but the larger 976 needs more vertical storage or clearance space. Neither model needs a permanent RV floor-flange connection for ordinary portable use. Dometic's related 974/975 and MSD variants have additional installation hardware or plumbing configurations and should not be confused with these two models.
Original Dometic exploded-parts reference
The maker's 970 Series service drawing numbers components 1–12. The table below identifies the original parts most relevant to the portable 972 and 976, including their different lower holding tanks.
| Factory callout | Original Dometic part | Component |
|---|---|---|
| 1 | 385311528 | Air pump for pressurizing the upper flush-water tank |
| 2 | 385311529 | Seat and cover assembly |
| 3 | 385311530 | Freshwater fill cap |
| 4 | 385311531 | Upper bowl assembly |
| 5 | 385311532 | Discharge spout cap |
| 6 | 385311533 | Rotating discharge spout assembly |
| 7 (972) | 385311535 | Gray lower tank assembly, 2.6 US gal |
| 8 (976) | 385311537 | Gray lower tank assembly, 5.0 US gal |
| 9 | 385311539 | Gray locking handle for separating the upper and lower sections |
Callouts 10–12 in the same factory drawing describe mounting brackets and MSD plumbing fittings for other 970 Series variants. They are not part of the standard portable 972 or 976 configuration. Use the component numbers above to identify the service parts for your toilet.
Upper fresh-water section
Holds flush water, the pump, lid, seat and bowl.
Locking handle
Releases the removable lower waste-tank assembly for emptying.
Lower holding tank
Contains waste, the fill-level indicator and the swiveling disposal spout.
Spout cap and outlet
Used to empty the lower tank at an approved disposal location.
Model 972 and 976 share this functional layout but have different lower-tank heights and original replacement tank numbers.
Use, cleaning and storage
- Fill the upper tank with clean water to the level indicated in the Dometic manual; do not obstruct the pressure-release feature in the fill cap.
- Use the flush button and tank slide control according to the manufacturer's instructions.
- Before disconnecting the waste tank, relieve pressure as directed, secure the upper section and use a designated disposal location.
- Rinse and clean the lower tank using approved toilet-care products, then drain and protect the system against freezing during storage.
Factory numbered diagram and operating instructions
Dometic 970 Series exploded parts drawing — page 2 (PDF). For use, maintenance and disposal instructions, see the Dometic 972/976 operating manual. On mobile, the complete product photos above are intended for quick identification; open the PDF only when detailed parts numbering is needed.
For permanently mounted pedal-flush toilets, see the Dometic 300/310/320 model and service-parts guide.
Compare genuine product photographs
Dometic 976
976 portable toilet with 5.0 US gal removable waste tank, gray
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