Dometic CTS4110 Replacement Toilet Cassette (19L)

Dometic Replacement Toilet Cassette – 19L (suits CTS3110 / CTS4110)

This is the genuine Dometic replacement waste cassette for the CTS3110 and CTS4110 built-in cassette toilets, holding 19 litres. If your original cassette has cracked, lost its seal, or the level gauge has failed, this drop-in replacement restores full function without needing to replace the whole toilet.

Key Features

• 19-Litre Capacity Matches the original CTS3110/CTS4110 cassette exactly, so it slides straight into your existing toilet housing.

• Genuine Dometic Fit Purpose-built to suit CTS3110 and CTS4110 toilets — no adaptors or modification required.

• Odour-Control Seal Updated ventilation connector and seal design help control odours between empties.

• Wheeled Design Built-in wheels and a pull handle make it easy to roll to the dump point when full.

• Level Indicator Integrated gauge shows when the cassette is nearing capacity.

• Easy Swap Removes and refits through the exterior service hatch, same as your original cassette.

Brand Quality: As a genuine Dometic spare part, this cassette is manufactured to the same standards as the original equipment fitted to your caravan, so fit, seal, and function are exactly as designed.

Brand: Dometic

Compatible Toilets: CTS3110, CTS4110

Capacity: 19 litres

Type: Removable wheeled waste cassette with pull handle

Cassette Dimensions (approx): 470 x 300 x 280 mm

Weight (empty, approx): 3.3 kg

Features: Integrated level gauge, updated odour-control seal, removable ventilation connector

Access: Fits and empties via the toilet's exterior service hatch

Warranty: Dometic 3-month spare parts warranty

Q: Does the price include GST?
A: Yes, all prices shown on the site include GST.

Q: Do you ship NZ-wide?
A: Yes, we ship throughout New Zealand.

Q: How do I know this cassette will fit my toilet?
A: This cassette is designed specifically for the Dometic CTS3110 and CTS4110 built-in toilets. Check the model plate or your toilet's documentation to confirm you have one of these models before ordering — if you're unsure, contact us with your caravan make and model and we'll confirm compatibility.

Q: Will this fit a Dometic Saneo toilet?
A: No. The Saneo toilet uses a different cassette (16L, different fitting) — see our Dometic Saneo Replacement Toilet Cassette listing for that model instead.

Q: What's the warranty?
A: This cassette is covered by Dometic's standard 3-month warranty on spare parts. Contact us if you have a fault or need to make a claim.

Q: How often will I need to empty it?
A: Typically every 2–4 days for a couple with regular use, sooner for a family. Cassette emptying points (CEPs) are widely available at NZ holiday parks and dump stations.