What is the Replacement Model Toilet for a 34421 Thetford Aqua Magic Style Plus RV Toilet?  

Question:

Expert Reply:

Welcome back Lynn! The Thetford Aqua-Magic VI RV Toilet item # TH37SE is going to be the direct replacement for your Thetford 34421 toilet, which is part of the older Aqua Magic Style Plus line.

The Aqua-Magic VI RV Toilet item # TH37SE is going to fit in the exact same spot as your 34421 toilet so you won't have to worry about moving or changing your sewer or water lines. It only requires 7-5/8" of rough in clearance because it's designed to be compact. It has a ADA-compliant 18" seat height, a slow-close residential sized toilet seat, and a two stage foot flush pedal.

Are you looking at making any other upgrades to your Phaeton's bathroom when you replace your 34421 toilet? You can also add the Hand Sprayer for Thetford RV Toilets item # TH77UE to the Aqua-Magic VI RV Toilet item # TH37SE.

expert reply by: Jerred H

0

TH37SE
(click to enlarge)

TH37SE
(click to enlarge)

Lynn M.

8/17/2026

Thank you. This helps in my decision. I assume I can reuse the existing sprayer as it is in good shap.

Jerred H.

8/17/2026

@LynnM You're welcome! You sure can!

Mark L.

8/17/2026

I’ve had mine fore over a year & l love it , my favorite thing is the seat goes down in slow motion …. Me and my wife love it … highly recommended to anyone looking to replace theirs …… Happy Camper

Jerred H.

8/20/2026

@MarkL Thanks for the recommendation Mark! Happy to hear you and your wife are really enjoying the new toilet. Thanks for coming back and sharing that feedback.

Paula

8/18/2026

I find it hard to get the sweet spot for the water to run into the toilet without opening the sliding bottom portion of the toilet. Also, the water splashes out of the bowl when filling the toilet. For now, we are keeping it. We do not know our options because the space to the back wall is tight. The good news is it does not leak and seems sturdy.

Expert Reply:

Welcome back Lynn! The Thetford Aqua-Magic VI RV Toilet item # TH37SE is going to be the direct replacement for your Thetford 34421 toilet, which is part of the older Aqua Magic Style Plus line.

The Aqua-Magic VI RV Toilet item # TH37SE is going to fit in the exact same spot as your 34421 toilet so you won't have to worry about moving or changing your sewer or water lines. It only requires 7-5/8" of rough in clearance because it's designed to be compact. It has a ADA-compliant 18" seat height, a slow-close residential sized toilet seat, and a two stage foot flush pedal.

Are you looking at making any other upgrades to your Phaeton's bathroom when you replace your 34421 toilet? You can also add the Hand Sprayer for Thetford RV Toilets item # TH77UE to the Aqua-Magic VI RV Toilet item # TH37SE.

expert reply by: Jerred H

0

Terri

8/17/2026

We love our toilet! It was so easy to install- and we don't do plumbing well. Less than 5 minutes. Quicker than replacing a seal.

Jerred H.

8/20/2026

@Terri That's great to hear Terri! Glad you were able to get the new toilet installed so easily. Thanks for sharing that feedback.