Questions about Toilets
The replacement pedastal you would use is the Dometic 510 Toilet Base Kit. PN: 385310120. Dyers Item Number: 37827
If you wish to purchase a whole new toilet which given its not much more, you would go with the
Dometic Sealand Traveler 510 Plus White China Foot Flush Toilet Dometic Part number: 302651001
And yes, it will include mounting hardware and a new seal.