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Thetford 42138 Aqua-Magic Style II Toilet Base, Bone (High Profile)

Thetford 42138 Aqua Magic II Replacement Base - Bone

Thetford Aqua Magic II Replacement Base - Bone

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List Price: $118.09

: $82.99

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Part Number: 42138
Manufacturer: Thetford
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Quantity in Stock :37

Availability: In Stock

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Fix a cracked or unstable toilet base without replacing the whole unit. The Thetford 42138 Aqua-Magic Style II Toilet Base (Bone) is the high-profile OEM pedestal/base assembly only—engineered to match the original footprint, height, and mounting pattern of Aqua-Magic Style II high-profile toilets.

Key Features

Genuine Thetford OEM base for Aqua-Magic Style II – High Profile
Bone finish to match existing Bone Style II components
Designed for single-pedal flush; compatible with water-saver linkage where equipped
Direct-fit: preserves original bolt pattern and rear water line routing
Perfect when the base only is damaged; reuse the bowl, seat/cover, and valve

What’s Included

Toilet base/pedestal assembly – Bone, High Profile
Not included: bowl, seat/cover, water valve, bowl seal, floor hardware, or floor flange

Commonly Reused From Your Toilet

Bowl & seat/cover (Bone)
Flush pedal linkage & water valve
Bowl seal, floor bolts/caps (replace if worn)

Fitment & Compatibility

For Thetford Aqua-Magic Style II – High Profile toilets.
Base only—not universal. Do not use on Low Profile Style II or on Style Lite/Style Plus families.
Matches OEM high-profile height and stance for comfortable seating.

Verify before ordering: Confirm your toilet family is Style II and profile is High. (Low-profile Bone base is Thetford 42136; White equivalents: 42137 High / 42135 Low.)

Specs

Manufacturer: Thetford
Part Number: 42138
Family: Aqua-Magic Style II
Profile: High Profile
Color: Bone
Component: Base / Pedestal only
Material: Durable molded composite (OEM grade)
Mounting: Standard two-bolt RV floor flange

Installation Notes

Shut off water and disconnect the water line.
Remove bolt caps/nuts, lift toilet, separate bowl from old base.
Inspect/replace bowl seal and floor flange seal as needed.
Set new base, align to flange, tighten bolts evenly.
Reattach bowl, reconnect water, test for leaks and pedal operation.

Helpful add-ons: bowl seal kit, floor bolt/cap kit, water valve (if sticky or leaking).

Add-On Parts (Recommended)

Style II Bowl Seal Kit RV Toilet Floor Bolt & Cap Kit Style II Water Valve Assembly Seat & Cover – Bone

Questions or need to confirm fit? Our RV experts are available by phone, chat, email, or text. We offer fast shipping and flexible payment options that big marketplaces don’t.

Fig #	Part #	Description
1A	42036	Seat Assembly for toilets built prior to May 2015 - White
1B	42178	Seat Assembly for toilets built after May 2015 - White
1B	42179	Seat Assembly for toilets built after May 2015 - Bone
2	34124	Replacement Nozzle Kit - White
	34125	Replacement Nozzle Kit - Bone
3	34122	Vacuum Breaker Kit
4	42141	Waste Ball Seal
5	34117	Waste Ball Seal - White
6	42115	Closet Bolt Kit
7	42067	Foot Pedal High - White
	42068	Foot Pedal High - Bone
	42079	Foot Pedal Low - Bone
9	42049	Replacement Water Valve Kit
10	42048	Waste Ball Drive Arm Kit
12	19289	Hand Sprayer Kit - Chrome
13	42137	Replacement Base Kit - White
	42138	Replacement Base Kit - Bone

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