Thetford 42137 Aqua Magic Style II and Residence Replacement Base - High Profile - White

The Thetford 42137 Replacement Base is a genuine part designed for Aqua-Magic Style II and Residence RV toilets. This high-profile base provides a stable, durable foundation for your toilet, ensuring proper alignment, secure installation, and reliable performance.

If your current toilet base is damaged, cracked, or worn, replacing it with the 42137 base restores stability and maintains the original height and fit of your RV toilet. Built to Thetford’s high-quality standards, this base is easy to install, corrosion-resistant, and engineered for long-lasting durability.

Maintain the structural integrity, comfort, and functionality of your RV bathroom with the Thetford 42137 Replacement Base — an essential component for high-profile Aqua-Magic Style II and Residence toilets.

Features & Benefits

• OEM replacement base for Aqua-Magic Style II and Residence permanent RV toilets
• High-profile design for increased seat height and added comfort
• White finish matches original Thetford toilet aesthetics
• Durable, stress-resistant construction built for RV use and vibration
• Restores structural integrity when original base is cracked or damaged
• Smooth install with existing mounting points — no additional modifications needed

Fits These Models

Compatible with:

• Thetford Aqua-Magic Style II (permanent toilets)
• Thetford Aqua-Magic Residence series toilets

Ensures correct mounting flange alignment for both standard and high-profile installations.

Common Issues Solved

Replacing the base with 42137 corrects:

• Cracked or damaged toilet base
• Unstable toilet mounting or rocking toilet bowl
• Leaks at the toilet base or flange seal area
• Cracked toilet exterior reducing aesthetics or structural strength
• Need for a higher seat height for improved comfort

Replaces / Also Known As

• Thetford 42137 Replacement Toilet Base (High Profile)
• Style II / Residence High-Profile Toilet Base – White
• RV Toilet Base Replacement — White (Style II / Residence)

What’s Included

• 1 White replacement toilet base (high-profile)
  (Mounting hardware, flange seal kit, and toilet bowl are not included — reuse original or order separately.)

Installation Overview

1. Shut off water supply and disconnect the toilet.
2. Remove the toilet bowl and drain water if needed.
3. Unbolt the old base from the floor flange.
4. Position and bolt the new 42137 base onto the flange, ensuring seal alignment.
5. Reinstall the toilet bowl onto the new base.
6. Reconnect water supply and test for stability and leaks.

Installation time will vary — typically 30–45 minutes, depending on access.

Frequently Asked Questions

Q: Will this base fit Aqua-Magic Style Lite or Style Plus toilets?
No — 42137 is specifically designed for Style II and Residence models. Other series require different base designs.

Q: Does this base include the seat, bowl, and mounting hardware?
No — it only includes the base shell. Seat, bowl, and bolts must be reused or purchased separately.

Q: Is this the OEM Thetford replacement part?
Yes — 42137 is the official factory replacement base for Style II and Residence toilets.

Q: Why choose the high-profile version?
The high-profile base raises the seat height for improved comfort — useful for taller users or those preferring a higher toilet seat.

Q: Will installation require special tools?
Standard tools (wrench, screwdriver, sealant) are sufficient. Removing and reinstalling the toilet bowl may require some effort depending on floor flange access and RV layout.