Cassettes & Holding Tanks
Browse our range of cassettes & holding tanks for caravans and RVs. Quality products from leading brands at competitive prices.
About Cassettes & Holding Tanks
Replacement cassettes and holding tanks are essential spare parts for any caravan with a cassette toilet system. At Dario Caravans Adelaide we stock genuine and aftermarket cassettes and holding tanks from Thetford and Dometic to suit the most popular toilet models in Australian caravans. A spare cassette is a smart investment for extended trips - swap out a full cassette for a fresh one and extend the time between dump point visits. We carry left-hand and right-hand holding tanks for Thetford C200, C400 and C500 series toilets, as well as Dometic CTS cassettes in various capacities. Every cassette we sell includes the correct seals and fittings for a leak-free installation. If you are not sure which cassette fits your toilet, bring your model number or old cassette to our St Marys store and our team will match the exact replacement. We can also help with cassette seal replacements and general toilet maintenance advice.
Cassettes & Holding Tanks - Frequently Asked Questions
Check the model number on your toilet (usually on a sticker inside the door opening). Bring that number to our store or call us and we will match the correct cassette. Thetford and Dometic each have specific cassettes per model.
Yes, especially for longer trips or remote travel where dump points are scarce. A spare cassette lets you swap out when full, giving you extra days of capacity between emptying.
No, cassettes are brand and model specific. A Thetford cassette will not fit a Dometic toilet and vice versa. Always match the cassette to your exact toilet model.





