Direct Replacement for Thetford Aqua-Magic V 31687 RV Toilet
Updated 10/20/2026 | Published 10/19/2026
Question:
I need to replace my Thetford toilet model 31687. What rv toilet would be a direct fit?
asked by: Jeanne G
(click to enlarge)
(click to enlarge)
Expert Reply:
Hey Jeanne! The Thetford Aqua-Magic VI RV Toilet # TH37SE is what I recommend to replace your existing Thetford 31687. Your current toilet is the Aqua-Magic V high-profile model, and the Aqua-Magic VI has the same 7-5/8" rough-in measurement, so it will fit your existing floor flange without having to move it. You may need to adjust the water supply connection depending on where your existing line is located.
What kind of RV are you replacing the toilet in?
Product Page this Question was Asked From
Thetford Aqua-Magic VI RV Toilet - Standard Height - Round Bowl - Slow Close - White Polypropylene
- RV Toilet
- Standard Height
- Round
- Slow Close Lid
- 7-5/8 Inch Rough-In
- Gravity Flush Toilet
- 360 Swirl - Better
- Plastic
- White
- Thetford
more information >
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Jeanne G.
10/20/2026
I have a Cruiser Fun Finder X210UDS