Thetford 42049

Water Valve

Thetford 42049 is the water valve for the Aqua-Magic Style II. The valve that lets fresh water into the Aqua-Magic Style II bowl when the pedal is pressed.

Which models this fits

  • Aqua-Magic Style II

    Verified against Thetford Parts List, Aqua-Magic Style II (Rev D).

Commonly confused with this

  • 34100

    The Style Plus uses 34100, a water valve with drive arm. The Style II uses 42049. Different models, different valves.

How to tell which one you have

Thetford’s Style II parts list shows 42049 as the water valve. Service kit paperwork for the same job is sometimes numbered 42049C, which is the kit rather than the bare valve.

Is this part still current?

Yes. Thetford still lists 42049 on its current parts list dated 11/4/2025.

Where to get this part

  • Check price on AmazonSold by Amazon

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Check this before you order

  • Confirm the toilet is a Style II.
  • Decide whether you need the bare valve or the service kit. Listings use 42049 and 42049C loosely.

Where our information comes from

We work from the manufacturer’s own documents. We have not installed this part and we do not test parts in a shop.

Last checked 2026-08-24.