Best Toilet Replacement for a Thetford Model 31684
Updated 01/12/2026 | Published 09/03/2024
Question:
I need a replacement for a Thetford model: 31684. I prefer a full size toilet if the bolt pattern is the same. What do you recomend? This is for full time RV living.
asked by: Victor
0
Expert Reply:
Hey Victor, thanks for reaching out!
Your Thetford 31684 has a rough-in measurement of 7-5/8" so the Thetford Aqua-Magic VI RV Toilet # TH37SE is the best replacement for you because it has the same profile so no modifications are needed to get this to fit your current setup.
expert reply by:
Jon G
0
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
more information >
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Samuel C.
1/12/2026
Hey Victor, how did the fit work out with the Thetford Aqua-Magic VI toilet in your RV? It sounds like the matching rough-in made for an easy swap. Your feedback could help others looking to upgrade for full-time living.