What does Thetford 33312 fit?

33312 is listed by Thetford for the Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. That comes from Thetford Parts List, Aqua-Magic IV Hand Flush.

What is the difference between 33312 and 25808?

25808 is the flush tube listed for Porta Potti465.465MSD and Porta Potti465465MSD. 33312 is listed for Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. They appear on separate Thetford parts lists.

Thetford 33312

Q: What is Thetford part 33312?

Thetford 33312 is the flush tube. The tube that carries water from the valve to the bowl rinse nozzle. Thetford lists it for Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. It is item 11 and 12 depending on the list.

Q: Does 33312 fit the Porta Potti465.465MSD?

No. Thetford's Porta Potti465.465MSD parts list assigns 25808 to this position, not 33312.

Flush Tube

Thetford 33312 is the flush tube for the Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. The tube that carries water from the valve to the bowl rinse nozzle. Thetford lists it for Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. It is item 11 and 12 depending on the list.

Which models this fits

Aqua-Magic IV Hand Flush
Verified against Thetford Parts List, Aqua-Magic IV Hand Flush (Rev. C).
Item 11 on this parts list.
Aqua-Magic IV Pedal Flush
Verified against Thetford Parts List, Aqua-Magic IV Pedal Flush (Rev. D).
Item 12 on this parts list.

What this does NOT fit

Porta Potti465.465MSD. Thetford's Porta Potti465.465MSD parts list assigns 25808 to this position, not 33312.

Porta Potti465465MSD. Thetford's Porta Potti465465MSD parts list assigns 25808 to this position, not 33312.

Porta Potti135.135Marine.155.155SL. Thetford's Porta Potti135.135Marine.155.155SL parts list assigns 29311 to this position, not 33312.

Porta Potti345.Campa Potti XG. Thetford's Porta Potti345.Campa Potti XG parts list assigns 29311 to this position, not 33312.

Porta Potti345Campa Potti XG. Thetford's Porta Potti345Campa Potti XG parts list assigns 29311 to this position, not 33312.

Porta Potti365.365MSD. Thetford's Porta Potti365.365MSD parts list assigns 29311 to this position, not 33312.

Porta Potti735MSD735Marine775MSD. Thetford's Porta Potti735MSD735Marine775MSD parts list assigns 29311 to this position, not 33312.

Commonly confused with this

25808
25808 is the flush tube listed for Porta Potti465.465MSD and Porta Potti465465MSD. 33312 is listed for Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. They appear on separate Thetford parts lists.
29311
29311 is the flush tube listed for Porta Potti135.135Marine.155.155SL, Porta Potti345.Campa Potti XG, Porta Potti345Campa Potti XG, Porta Potti365.365MSD and Porta Potti735MSD735Marine775MSD. 33312 is listed for Aqua-Magic IV Hand Flush and Aqua-Magic IV Pedal Flush. They appear on separate Thetford parts lists.

How to tell which one you have

Find item 11 or 12 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. Thetford still lists 33312 on its current parts list.

Check this before you order

Confirm your toilet is a Aqua-Magic IV Hand Flush or a Aqua-Magic IV Pedal Flush.
If it is a Porta Potti465.465MSD or a Porta Potti465465MSD, order 25808 instead.
If it is a Porta Potti135.135Marine.155.155SL, Porta Potti345.Campa Potti XG, Porta Potti345Campa Potti XG, Porta Potti365.365MSD or a Porta Potti735MSD735Marine775MSD, order 29311 instead.
Ignore listing titles that claim one part covers several models unless the manufacturer's parts lists agree.

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.

Checking current eBay inventory…

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.

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.

Thetford Parts List, Aqua-Magic IV Hand Flush (Rev. C). Published by Thetford.
Thetford Parts List, Aqua-Magic IV Pedal Flush (Rev. D). Published by Thetford.
Thetford Parts List, Porta Potti465.465MSD. Published by Thetford.
Thetford Parts List, Porta Potti465465MSD (Rev. D). Published by Thetford.
Thetford Parts List, Porta Potti135.135Marine.155.155SL (Rev. C). Published by Thetford.
Thetford Parts List, Porta Potti345.Campa Potti XG. Published by Thetford.
Thetford Parts List, Porta Potti345Campa Potti XG (Rev. E). Published by Thetford.
Thetford Parts List, Porta Potti365.365MSD (Rev. D). Published by Thetford.
Thetford Parts List, Porta Potti735MSD735Marine775MSD. Published by Thetford.

Last checked 2026-08-29.