How to Identify Dometic Toilet for Toilet Seat Replacement

Updated 01/05/2026 | Published 09/08/2024

Question:

i need to replace toilet seat in motor home dometic toilet. i dont know model mounting holes are 7.5 inches apart

asked by: James W

Expert Reply:

Hello James; you're going to need to identify the toilet to find the right replacement seat. There will be a sticker on the back like those seen below which will allow you to identify which one you have. Once you have this information you can find the right replacement. If you have a 310 Series Part-Timer then the # DOM83FR you were looking at will fit.

I went ahead and attached a link to all of our available replacement seats below for your reference. If you still aren't able to find the right seat go ahead and add your model in the comments below and I'll help you get the one you need.

expert reply by: Robin H

Dometic 510 Toilet Label Location
(click to enlarge)

Dometic 310 Toilet Label Location
(click to enlarge)

Robin H.

1/5/2026

Hey James, were you able to find the model number on your Dometic toilet and match it to the right replacement seat? Knowing which one fit could really help others trying to replace theirs too.