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Replacement Water Valve for Thetford Aqua-Magic Style II RV Toilet - Restores Flush Power - Qty 1
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Thetford

Replacement Water Valve for Thetford Aqua-Magic Style II RV Toilet - Restores Flush Power - Qty 1

Part Number: TH78SA
64 Reviews | 11 Questions
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$27.23
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thetford accessories and parts rv toilet water valve replacement for aqua-magic style ii - restores flush power qty 1
thetford accessories and parts rv toilet
thetford accessories and parts rv toilet valves replacement water valve for aqua-magic style ii - restores flush power qty 1
thetford accessories and parts rv toilet valves
thetford accessories and parts rv toilet replacement water valve for aqua-magic style ii - restores flush power qty 1
thetford accessories and parts valves th78sa
thetford accessories and parts valves water valve th78sa
thetford accessories and parts valves water valve
thetford accessories and parts water valve th78sa

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Restore flushing power to your Thetford Aqua-Magic Style II RV toilet with this replacement water valve. Designed for a perfect fit, it keeps models 42050, 42058, 42059, 42062, 42063, and 42072 working like new so you can enjoy hassle-free operation. 1-800-940-8924 to order Thetford accessories and parts part number TH78SA or order online at etrailer.com. Free expert support on all Thetford products. Great prices and Fastest Shipping for Replacement Water Valve for Thetford Aqua-Magic Style II RV Toilet - Restores Flush Power - Qty 1. Accessories and Parts reviews from real customers.
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Thetford Accessories and Parts - TH78SA

  • RV Toilet
  • Valves
  • Water Valve
  • Thetford

Restore flushing power to your Thetford Aqua-Magic Style II RV toilet with this replacement water valve. Designed for a perfect fit, it keeps models 42050, 42058, 42059, 42062, 42063, and 42072 working like new so you can enjoy hassle-free operation.


Features:

  • Restores strong flushing power - Replaces your worn-out water valve to keep your toilet working like new
  • Perfect fit for Aqua-Magic Style II - Designed for Thetford models 42050, 42058, 42059, 42062, 42063, and 42072
  • Easy DIY installation - Swap out the old valve and get back to your adventure in no time
  • Reliable, leak-free performance - Prevents leaks and water waste, keeping your RV's bathroom mess-free
  • Built for life on the road - Durable construction handles the bumps and vibrations of RV travel.


Fits:

  • Thetford Aqua-Magic Style II RV toilets: 42050, 42058, 42059, 42062, 42063, and 42072

diagram pointing to the water valve from Thetford's instructions


42049 Replacement Water Valve for Thetford Aqua-Magic Style 2 RV Toilet - Fits Thetford Part #42058, 42059, 42062, 42063 - RV Toilet Valve Repair







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Customer Satisfaction Score:

Ratings & Reviews

4.5

64 reviews
5 Stars
(47)
4 Stars
(8)
3 Stars
(5)
2 Stars
(1)
1 Star
(3)
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by:
The part I was sent does not work. I called yesterday and talked to Austin and he said they had had the same issue with this with another customer and he told me to call Thetford. I needed Model number 42053 and was sent Model 42049 part for my toilet by Robert W. Austin did more digging and said they didn't carry the part I needed and said they would sent me a pre-paid label to send the part back. So, now, waiting on the label. The white piece I needed is 5.5" long and the one sent is around 2.5". One not in wrapper is what we needed.
by:
Got to have as a spare. Hope it’s easy to install when I need it. Good price. Fast shipping
by:
The product is good. Four stars because the instructions aren’t great. Had to go to YouTube for clarification.
by:
Instructions were spot on.
by:
The kit fixed my toilet and has been working good for a year.
by:
This was the exact oem replacement, Fairly easy install, it works perfectly.
by:
Quick delivery easy installation
by:
I have received excellent service from eTrailer. Thanks agaon.
by:
Easy installation. Shame that it is a yearly repair... Third time in three years! Won't know if this one works until the spring as I put the camper to bed for the winter immediately following the valve replacement. If it doesn't - time to replace the Thetford with a Dometic model...
by:
Fit perfect and solved the leak!
by:
Product looks great, I haven’t installed it yet.
by:
Water started leaking on our last trip. etrailer has the parts I need all the time
by:
On the Thetford 42058 Valve o-ring and seal fit like it was supposed to, direct replacement, but the seal on the ball does NOT fit either the ball or the base seal. To large for the ball seal and wrong shape for the base seal. Don't know if Thetford changed design parameters recently or not but they packaged the wrong gasket with the right valve.
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Lazer S. profile picture
Etrailer Expert

Lazer S.

4/7/2026

Sorry to hear everything didn't fit properly. I will be contacting Thetford to see if I can get some answers for you. In the mean time, is there any way you could send me a couple pictures of the incorrect seal? It might help. [email protected]

by:
The valve fit. Fairly easy to install. No more leaking.
by:
Worked as expected
by:
Spare parts for the "parts box" in the RV
by:
Perfect replacement product. Perfect fit. Perfect delivery. Thank you, etrailer.
by:
Good product. Very fast service and good communication by etrailer.
by:
Worked perfectly
by:
It was everything I needed. Great service as always.
by:
Good Service. Parts fixed the problem.
by:
Quality material. Good directions very knowledgeable people to help to get the right parts.
by:
I ordered this product as a back-up in case my toilet valve fails, thus the average review rating. I have no knowledge if works, but expect it to. Product arrived as ordered.
by:
Perfect fit. Leak is repaired. Trust the OEM parts for this repair. I tried the less expensive knock-offs, and the O-ring didn't fit.
by:
Everything I needed to fix our leaky toilet.
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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Amanda M
Edited by:
Amanda M
Employee Andy C
Installed by:
Andy C
Employee Cody B
Written by:
Cody B

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