Thetford Aqua-Magic Style II: 42058–42063 RV Toilet Parts
The Thetford Aqua-Magic Style II uses a ceramic bowl on a lightweight polypropylene base, with a single foot pedal for filling and flushing. Four models cover two colours and two heights. The toilet's model number and production date matter when choosing a new seat or internal repair part.
Find your Style II model by photograph
Aqua-Magic Style II, white, low profile
View model 42059
Aqua-Magic Style II, bone, high profile
View model 42062
Aqua-Magic Style II, bone, low profile
View model 42063High versus low profile: what changes?
White, high | 42058
17⅞-inch seat height; 19½-inch overall height.
White, low | 42059
12⅛-inch seat height; 14-inch overall height.
Bone, high | 42062
17⅞-inch seat height; 19½-inch overall height.
Bone, low | 42063
12⅛-inch seat height; 14-inch overall height.
The manufacturer lists a 15-inch outside width and 20-inch front-to-back depth for both heights. Before replacing an existing toilet, measure the floor flange position, available space behind the bowl, door clearance and connection location. Thetford's dimensional sheet shows the complete A–G measurements for each height.
Identify the original Style II parts
These numbers correspond to the callouts on Thetford's Style II parts drawing, Revision C. Choose a part using the number on the existing toilet and the corresponding drawing position, rather than selecting only by a similar-looking seal or pedal.
Drawing 1
42178 / 42179Seat and cover, white / bone, for post-May 2015 units
Drawing 1
42036 / 42037Earlier white / bone seat-and-cover assemblies
Drawing 2
34124 / 34125Water rinse nozzle, white / bone
Drawing 3
34122Vacuum breaker at the water connection
Drawing 4
42141Waste-ball seal at the bowl outlet
Drawing 6
42115Closet mounting bolt kit
Drawing 7
42067 / 42068High-profile foot pedal, white / bone
Drawing 7
42078 / 42079Low-profile foot pedal, white / bone
Drawing 8
42080 / 42081Pedal cover insert, white / bone
Drawing 9
42049Water valve
Drawing 10
42209Waste-ball drive-arm repair kit
Drawing 11
42111 / 42112Floor-bolt caps, white / bone
Drawing 12
42135–42138Replacement base assemblies; match colour and height
Drawing Not pictured
33239Closet flange seal
Water keeps running
Inspect the water valve and its connections; confirm the pedal returns correctly.
Bowl loses standing water
Check the waste-ball seal and the moving ball for residue, damage or misalignment.
Pedal does not operate correctly
Compare the foot pedal, cover and drive-arm parts with the factory callouts.
Water appears at the floor
Inspect the mounting bolts and flange seal; do not confuse this with the bowl seal.
Before replacing a part
- Identify the exact toilet model and colour using the manufacturer's label.
- For a replacement seat, determine whether the toilet was produced before or after May 2015.
- Shut off the water supply and follow Thetford's sanitation service instructions before disconnecting a valve or removing the toilet.
- Use the factory parts drawing to match the numbered component and mounting arrangement before ordering.
Thetford's original parts drawing
Open the Aqua-Magic Style II numbered parts diagram (PDF) and view the manufacturer's high/low dimensions (PDF). The product photographs above are available for quick identification on a phone; the PDF provides the complete exploded component view.
For similar-looking alternatives with different mechanisms, compare Aqua-Magic Style Plus and Aqua-Magic Residence. Their part numbers should not be substituted for Style II components without an exact manufacturer match.
Compare Thetford toilet models by photo to identify a different Aqua-Magic, Bravura or Porta Potti before selecting parts.
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