Trying to Verify the Correct Replacement Waste Ball Drive Arm for Thetford Aqua Magic Style ll 42070

Updated 07/23/2026 | Published 07/14/2026

Question:

I have a Thetford Aqua Magic Style ll the model is 42070 . Can you tell me if these parts will fit my toilet ?

asked by: Gary V

Expert Reply:

Happy to help, Gary, and thanks for reaching out!

Yes, the Waste Ball Drive Arm Kit # TH34FR53CF is compatible with your Thetford Aqua-Magic Style II model 42070. I confirmed that model 42070 is part of the Aqua-Magic Style II family. If you're replacing the drive arm because the waste ball won't open when you press the foot pedal, this kit is the correct repair.

What problem is your Aqua-Magic Style II having? We'd be happy to help make sure you get the right replacement parts.

expert reply by: James D

Gary V.

7/16/2026

thank you for your reply James i’m going to order the parts now .

James D.

7/16/2026

@GaryV sounds good and if you have any other questions, don't hesitate to reach out. We appreciate you choosing etrailer!

Bryan L.

7/17/2026

Gary - all the parts I bought from eTrailer for my 42070 were exact fits and easy to install...though the ball valve did not completely seal for a few days with the water in the bowl slowing leaking out. To remedy, I put a coating of Vaseline on the valve and gave the foot peddle a gentle upward nudge with my foot after use. After a few days the problem corrected itself. I assume the rubber gasket was just too stiff at first. Since then all has been good.

Steve

7/17/2026

will it fit a 42072 toilet

James D.

7/23/2026

@Steve Yes, Thetford's official parts list shows that part 42209 # TH34FR53CF is the correct Waste Ball Drive Arm Kit for all Aqua-Magic Style II toilets like the model 42072.