Dometic RV Toilets

What Dometic RV toilet models do you carry?

Our Dometic RV toilet collection covers the porcelain and plastic models RV owners ask for most, including the Dometic 320, 310, 311 low-profile, and the 420 series. Each listing shows bowl height, bowl material, foot pedal or hand flush configuration, and color so you can match the replacement to what is already in your rig. Confirm your existing model number on the base of the toilet before ordering to make sure the floor flange and water connection line up.

What is the difference between the Dometic 320 and the Dometic 420 RV toilet?

The Dometic 320 has a full-size residential bowl height (around 18 inches) with a vitreous china bowl and a foot pedal flush, which most full-timers prefer for comfort. The Dometic 420 is a lower-profile, lightweight plastic-bowl unit with a hand flush lever, common in mid-range travel trailers and fifth wheels where weight and price point matter more than bowl height. Both share the standard 3-inch floor flange pattern used across most RV plumbing setups.

Are Dometic RV toilets a direct replacement for older Sealand units?

Yes. Dometic acquired Sealand, and the current 300, 310, 320, and 510 series toilets use the same floor flange footprint and 1/2-inch water inlet as the legacy Sealand Traveler models, so most swaps are bolt-in with no plumbing modification. If you are also updating supply lines or shutoff valves during the install, the RV winterizing kits collection has the fittings and antifreeze you will want on hand once the new toilet is set.

What ships with a Dometic RV toilet order?

Each Dometic toilet ships with the floor seal, mounting bolts, and water supply connection needed for a standard replacement install. Larger porcelain models ship via ground freight; smaller plastic-bowl units like the 420 ship standard parcel. Orders over $100 ship free. If you are restocking other systems at the same time, the RV electronics collection covers control boards, monitors, and switches that often get replaced alongside a bathroom refresh.

How do I confirm the right Dometic toilet for my RV?

Measure three things before ordering: the distance from the wall to the center of the floor flange (rough-in), the floor-to-rim bowl height, and the water supply position (left rear is standard on most Dometic units). Then check the data sticker on the base of your current toilet for the model number. If anything looks non-standard, text or call our team at 817-984-1852 and we will confirm fitment against your coach.