Thetford C-400 Holding Tank Plate - Left

Thetford C-400 Holding Tank Mechanism - Left

£39.75 (inc VAT) £46.99NewCondition
Thetford C-400 Holding Tank mechanism - Left. Thetford part number 32332. Colour grey. ... more
Thetford C-400 Holding Tank mechanism - Left. Thetford part number 32332. Colour grey.

When you are sat on the toliet, the exterior wall of the caravan is on your left.
Can be used on the C402 and C403

2 Technical Questions on the Thetford C-400 Holding Tank Mechanism - Left


We have a C-402X thetford cassette toilet. When you go to use the toilet you push a knob which normally opens the toilet up. At the moment we can see the blades moving and the black 'disc' which would appear to have come unattached to the blades is sticking . Can you please advise what part we would require. Thank you


The easiest repair is to replace the mechanism, our part 137137 for a left hand version or 137138 for the right hand. The mechanism can be removed by turning the whole assembly anticlockwise and lifting it away from the holding tank. The black disc is known as the blade and is our part 137139 and if this is the only part broken then you may feel that you just wish to replace this part.


Hello, i have a number of enquires about parts i need for my 2003 Adria adora 532ld. The water inlet socket is a truma crystal 2 compact housing and i'm getting lots of sealing problems, water spurts down the outside of the van even when I set the pressure to the lowest possible setting, do I need to replace this with a more up to date version ? The C402 toilet cassette has had no maintenance for 6 years and the flaps and internal moving parts are getting stuck, is there a repair package for all this? also the flush pump has failed (i've seen your repair page on this) so i would need to order this also


Best to replace the Crystal system with the later Ultraflow inlet, our ref. 149669 in Ivory or 149670 in white.
With regard to the toilet cassette then probably best to replace the mechanism assembly, ref 137137 for a left hand or 137138 for a right hand. The position of the outside wall of the caravan when sat on the toilet determines whether LH or RH.

12 Customer Reviews on Thetford C-400 Holding Tank Mechanism - Left

Thetford C400 Holding Tank Mechanism

by (26 Sep 2018)
5 star review(5/5)
This is a genuine part so as expected it was perfectly OK. One word of warning - the brand new seals are a very tight fit and I needed liberal quantities of silicone grease to fit to the holding tank.

Flap Guide Found Broken Off And Missing The Night Before Our Holiday !

by (03 Aug 2018)
5 star review(5/5)
ordered this at 10pm on Thurs and it was delivered 10am on Saturday. great replacement part for our cassette toilet but initially confused as to the left/right description .... after a bit of disearching i found out this is to with which side the cassette comes out of the toilet. To work it out, imagine sitting on your loo if the cassette comes out on the left this needs a left hand & the right is right hand

Thetford Spare Part

by (07 Jun 2018)
5 star review(5/5)
This is a replacement part for my CamperVan Thetford Toilet Holding Tank. Urgently required and very quickly provided and shipped overseas to me.


by (04 Oct 2017)
5 star review(5/5)
Very prompt efficient servixe

Very Happy

by (02 Aug 2017)
5 star review(5/5)
Exactly what I ordered, shipped to Canada faster and cheaper than buying locally!

Thetford C400 Holding Tank Mechanism

by (13 Oct 2016)
5 star review(5/5)
This is exactly what I wanted. Arrived very quickly. A doddle to fit. Working again now. Well pleased.


by (03 Aug 2016)
5 star review(5/5)
This was a replacement for the one that had just broke on our thetford cassette. Arrived earlier than stated, very easy to fit.


by (16 Jun 2016)
4 star review(4/5)
Easy replacement for Thetford cassette. Simple remove and replace process.

Thetford C400

by (02 Sep 2015)
5 star review(5/5)
Identical to original and esay to fit. Excellent service.

Thetford Cassette

by (13 Nov 2012)
5 star review(5/5)
Very easy to fit.


by (09 May 2012)
5 star review(5/5)
Great product, incredible price and super fast delivery! Simply A1.

Thetford Holding Tank Mechanism

by (13 Sep 2010)
5 star review(5/5)
A quickly and pretty easily installed replacement unit. It would have been useful to have a few notes on the procedure, including the use of a length of timber wedged between the slided to help unscrew the old assembly. Disposable gloves are recommended. You will need to remove the float from the old part and click it into the new one, though everything else is included. A liberal spray of silicone lubricant will help subsequent operation.
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