Will the Thetford Aqua Magic VI be a Direct Replacement for the Thetford Aqua Magic IV?
Updated 12/29/2025 | Published 12/09/2025
Question:
Is the thetford aqua magic iv a direct replacement for the aqua magic 6 .. toilet flange?
asked by: Martin
Expert Reply:
Hello Martin,
Great question. The Aqua-Magic VI # TH37SE uses the same standard 2-bolt pattern and seal style as the Aqua Magic IV. So from a bolting-it-down standpoint, they’re compatible. The only thing you really need to double-check is the space between your flange and the back wall. The Aqua-Magic VI needs about 7-5/8 inches of clearance, while the older Aqua-Magic IV usually sat a little closer to the wall, around 7-1/4 inches. That means the VI just needs a tiny bit more room behind it. In most RV bathrooms this isn’t a problem at all, but if your old toilet was already snug up against the wall, it’s worth grabbing a quick measurement to be sure. If you can measure from the center of the bolts on your floor flange to the wall behind the toilet, I can confirm for you whether the VI will fit perfectly in your space. I attached an image for reference. Please let me know what measurement you come up with.
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Product Page this Question was Asked From
Thetford Aqua-Magic VI RV Toilet - Standard Height - Round Bowl - Slow Close - White Polypropylene
- RV Toilets
- Standard Height
- Round
- Slow Close Lid
- 7-5/8 Inch Rough-In
- Gravity Flush Toilet
- 360 Swirl - Better
- Plastic
- White
- Thetford
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Kate F.
12/29/2025
Hey Martin, were you able to measure the distance from your toilet flange to the wall to see if the Aqua-Magic VI fits? Once you have that number, I can help confirm the clearance. Let me know what you find—I’m happy to help.