Dometic 301 Low-Profile RV Toilet Parts & Diagram

The Dometic 301 is a low-profile, foot-flush RV toilet with a polypropylene bowl and base. Its compact height is useful where a taller residential-style toilet would sit too high. A worn bowl seal, water valve, vacuum breaker or floor seal can often be replaced individually using the original factory part numbers below.

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Confirm the model label beneath the water valve before ordering. The 301 is the low-profile counterpart to the 300; it is different from Dometic's ceramic-bowl 311 and 321 models.

Dometic 301 factory parts diagram

The 301 low-profile drawing has 11 numbered positions. Position 1 identifies the seat and cover; position 2 is the flush-ball seal; positions 6 through 8 cover the water valve, water hose and vacuum breaker. The hand-sprayer components at positions 9–11 are optional.

Open Dometic 301 exploded diagram (PDF)

301 parts by diagram number

Choosing between a seal and a valve

301 dimensions and floor clearance

Dometic lists the 301 at 15½ inches high, 16 inches wide and 19¾ inches front to back, with a 14-inch seat height. The minimum rough-in from the back wall to the floor-flange centre is 8¾ inches. Allow clearance for the foot pedal to reach the floor when pressed, and check the supply-line routing.

The original low-profile versions were listed as 302301671 white and 302301673 bone, with different order numbers for hand-sprayer-equipped versions. Compare the installed label and the Dometic 300/301 installation and operation manual (PDF) before replacement.

Other Dometic toilet parts diagrams

If your existing toilet is the taller version, see the Dometic 300 tall parts diagram. For ceramic-bowl models, compare the 310 and 320 guides. A shared-looking part should only be substituted when the manufacturer number matches.

Compare the Dometic 301, 311 and 321 low-profile toilets to identify the correct model, dimensions and factory parts guide.

Dometic 301 replacement parts with photos

Tap a pictured component to open its UsedRVParts.ca product listing. The numbers below correspond to the original Dometic exploded drawing.

Flush-ball seal385311658

Replacement seal at the bowl outlet when the flush ball no longer holds water. Diagram position 2.

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Water valve kit385311641

Controls fresh water entering the bowl when the foot pedal is operated. Diagram position 6.

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Standard vacuum breaker385316906

Vacuum-breaker kit for the version without the optional hand sprayer. Diagram position 8.

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White floor mounting kit385311652

White floor mounting hardware and seal identified in the factory parts list. Diagram position 4.

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Bone floor mounting kit385311653

Bone-coloured counterpart to the floor mounting hardware and seal kit. Diagram position 4.

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Optional hand-sprayer components

A 301 without a hand sprayer uses a different vacuum-breaker connection. Match the installed plumbing before choosing one of these options.

Vacuum breaker with hand-spray connection385230335

Used with the optional rinse-sprayer plumbing arrangement. Diagram position 8.

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Optional sprayer/vacuum-breaker kit385319054

Combined optional kit listed by Dometic at position 9; check the supplied parts on the listing. Diagram position 9.

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Optional white hand sprayer385311124

Separate rinse sprayer identified in the original parts diagram. Diagram position 10.

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