Looking for replacement parts for your Dometic/Sealand Magnum Opus 3110 RV toilet? Refer to the list below to find the part number you need.
As a Dometic Master Distributor, Environmental Marine carries a full line of replacement parts for Dometic/Sealand marine toilets and RV toilets. If you can’t find the part you’re looking for in our online store, contact our team and we’ll track it down for you!

| Item Number | Part Number | Item Description |
|---|---|---|
| 1 | 385344013 | White Toilet Seat |
| 1 | 385344014 | Bone Toilet Seat |
| 1 | 385344018 | Platinum Toilet Seat |
| 1 | 385344019 | Ebony Toilet Seat |
| 2 | 385310811 | White China Bowl |
| 2 | 385310812 | Bone China Bowl |
| 2 | 385310867 | Platinum China Bowl |
| 2 | 385310869 | Ebony China Bowl |
| 3 | 385310807 | Vacuum Breaker Assembly |
| 3 | 385310808 | Vacuum Breaker Assembly (for spray handle models) |
| 4 | 385311009 | Base Seal Kit |
| 5 | 385310969 | Shaft / Half Ball Kit |
| 5 | 385310971 | Ebony Shaft / Half Ball Kit |
| 6 | 385310821 | Water Valve (12VDC) |
| 7 | 385311051 | Base Assembly |
| 8 | 385311050 | Complete Base Assembly (12VDC) |
| 9 | 385310851 | White Access Cover |
| 9 | 385310852 | Bone Access Cover |
| 9 | 385310864 | Platinum Access Cover |
| 9 | 385310866 | Ebony Access Cover |
| 10 | 385311011 | L-Bolts & Hardware |
| 11 | 385310822 | Motor & Hardware (12VDC) |
| 12 | 385311013 | Floor Flange Adapter Kit |
| 13 | 385311292 | Base Ring Insert Kit |
| 14 | 385310785 | Bone Mounting Kit |
| 14 | 385310679 | White Mounting Kit |
| 14 | 385310813 | Chrome Mounting Kit |
| 14 | 385310814 | Gold Mounting Kit |
| 15 | 385311018 | Supply Hose |
| 16 | 385310809 | Chrome Hand Sprayer Kit |
| 16 | 385310873 | Ebony Hand Sprayer |
| 17 | 385310887 | Control Board Kit (12VDC) |
| 18 | 385311294 | Base O-Ring |
| 19 | 385343765 | 3″ Spigot Floor Flange |
| 19 | 385345892 | 3″ Hub Floor Flange |
| 19 | 385345889 | 3″ MPT Floor Flange |
| 19 | 307344653 | 45° Swivel Floor Flange |
| 20 | 385311139 | Wall Mounted Switch Kit w/ Cable |
| 21 | 385311417 | Base Drive Arm Assembly |
| Not Shown | 385310854 | Access Lid Mounting Kit |