Verified Compatibility

Thetford 33317

Blade Spring

Thetford 33317 is the blade spring for the Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. The spring that returns the blade to its closed position. Thetford lists it for Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. It is item 6 and 7 depending on the list.

Is it compatible?

Compatible with

  • Aqua-Magic IV Hand Flush
  • Aqua-Magic IV Pedal Flush

Every model above is named in a manufacturer parts list, cited in full further down this page.

Current eBay listings for Thetford 33317

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eBay carries exact OEM numbers, discontinued parts and old stock that general retailers drop, which is usually where a part this specific turns up.

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Compatible models, and the document that says so

  • Aqua-Magic IV Hand Flush

    Verified against Thetford Parts List, Aqua-Magic IV Hand Flush (Rev. C).

    Item 6 on this parts list.

  • Aqua-Magic IV Pedal Flush

    Verified against Thetford Parts List, Aqua-Magic IV Pedal Flush (Rev. D).

    Item 7 on this parts list.

How to tell which one you have

Find item 6 or 7 on your model’s parts diagram — that callout is this part. Check the model on the data plate reads Aqua-Magic IV Hand Flush or Aqua-Magic IV Pedal Flush.

Is this part still current?

Yes. 33317 is listed in Thetford Parts List, Aqua-Magic IV Hand Flush, Rev. C, which is the current parts documentation we hold for this model.

Also worth having before you start

  • Disposable nitrile gloves

    General guidance for any waste-contact job, not specific to one manufacturer: wear protective gloves and eye protection when you touch anything that has been in contact with human waste, and disinfect your tools and work surface afterwards. If you do not already have a box in the camper, get one before you start.

These are supplies, not replacement parts. We have not matched them to your model, because they do not need to fit anything.

Check this before you order

  • Confirm your toilet is Aqua-Magic IV Hand Flush or Aqua-Magic IV Pedal Flush.
  • Ignore listing titles that claim one part covers several models unless the manufacturer's parts lists agree.

Everything documented for this appliance

Not the part you are holding?

Search by number, or check how to tell two similar-looking parts apart before you order.

Search by part numberWhy similar parts may not fit

Current marketplace inventory

Listings from eBay

We verified the part above from manufacturer documents. The listings below are current eBay inventory, and eBay sellers set their own titles, prices and shipping.

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Camper Replacement Parts is not the seller. Price, shipping, stock and item condition are set by the eBay seller and can change at any time. We may earn a commission if you buy through these links.

Manufacturer
Thetford
OEM part number
33317
Part
Blade Spring
Compatible models
Aqua-Magic IV Hand Flush; Aqua-Magic IV Pedal Flush
Status
Listed in the most recent parts documentation we hold
Primary evidence
Thetford Parts List, Aqua-Magic IV Hand Flush, Rev. C; Thetford Parts List, Aqua-Magic IV Pedal Flush, Rev. D
Last checked
2026-08-29

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Where our information comes from

We work from the manufacturer’s own documents. We have not installed this part ourselves, so everything here comes from the documentation rather than from a workshop.

Last checked 2026-08-29.