Elkhart RV Parts · Parts finder

Dometic 320 Series RV Toilet Replacement Parts

Identify your Dometic 320 Series RV Toilet before choosing a replacement component. Match the complete label and the original part; a similar appearance or shared brand is not enough to establish fit.

Identify your model · Find your component · Before you order

Start with the right identification

  1. Read the toilet label. Confirm the complete Dometic 320 model and any product or serial number. A model from another series is not confirmed by this guide.
  2. Find the component. Use the reference diagram and part number, then compare the existing assembly.
  3. Check the configuration. Confirm white or bone finish where applicable, the seat and mounting hardware, and whether the assembly has a hand sprayer.
  4. Match the exact number. A listed alternative or older service number needs confirmation against the exact toilet before substitution.

Current replacement listings

Compare current product images, prices and availability. Parts listed together do not necessarily fit every model in this family; use the model links and reference notes to confirm your match.

23 replacement listings

Find the replacement component

Product links open the current listing for price, availability and kit contents. A reference entry without a link is not a statement about current stock. Match the exact part before ordering.

Dometic 320 Series RV Toilet parts reference
Diagram ref. Part number Reference description Reference qty. Current listing
1 385311650 SEAT MOUNTING HARDWARE - WHITE 1 View part 385311650
2 385311863 SEAT/COVER REPLACEMENT - WHITE 1 View part 385311863
2 385311864 SEAT/COVER REPLACEMENT - BONE 1 View part 385311864
3 385311658 KIT, FLUSH BALL SEAL 1 View part 385311658
4 385311652 KIT, MOUNTING HARDWARE - WHITE - Includes Item 5 1 View part 385311652
4 385311653 KIT, MOUNTING HARDWARE - BONE - Includes Item 5 1 View part 385311653
5 385311654 KIT, MOUNTING HARDWARE CAP - WHITE 1 View part 385311654
5 385311655 KIT, MOUNTING HARDWARE CAP - BONE 1 View part 385311655
6 385311656 KIT, PEDAL COVER - WHITE 1 View part 385311656
6 385311657 KIT, PEDAL COVER - BONE 1 View part 385311657
7 385311641 KIT, WATER VALVE 1 View part 385311641
8 385340177 BOWL SUPPLY HOSE-BONE - Includes Clamps 1 View part 385340177
8 385345377 SUPPLY HOSE, WHITE USE 385340177 - Includes Clamps 1 Reference only
9 385311164 KIT, SEALING GROMMET 1/2IN 1 View part 385311164
10 385230335 VACUUM BREAKER (USED WITH HAND-SPRAY) - Includes Item 9 1 View part 385230335
10 385316906 KIT, VACUUM BREAKER - WITHOUT SPRAY - Includes Item 9 1 View part 385316906
11 385319054 VACUUM BREAKER WITH SPRAY KIT - Includes Items 9,10 & 12 1 View part 385319054
12 385311124 KIT, HAND SPRAY-WHITE - Includes Item 13 1 View part 385311124
13 385230319 BRACKET, HAND SPRAY (SCREWS INCLUDED) USE 385311124 1 Reference only
NS 385311719 MOUNTING ADAPTER KIT-WHITE 1 View part 385311719
NS 385311720 MOUNTING ADAPTER KIT-BONE 1 View part 385311720
NS 385311718 WATER LINE EXTENSION KIT 1 Reference only
NS 385310855 BOWL REINFORCEMENT BRACKET KIT-TALL 1 Reference only
NS 385310139 UNIVERSAL MOUNT KIT 2 BOLT TO 4 BOLT-WHITE 1 View part 385310139
NS 385310140 UNIVERSAL MOUNT KIT 2 BOLT TO 4 BOLT-BOLT 1 View part 385310140
NS 385343765 FLOOR FLANGE SPIGOT, 3 IN. 1 View part 385343765
NS 385345892 FLOOR FLANGE SOCKET, 3 IN. 1 View part 385345892
NS Foot Pedal FOOT PEDAL , NOT REPLACABLE 1 Reference only
View the reference parts diagram
Dometic 320 Series RV Toilet Exploded Parts Diagram
Reference diagram retained from this guide. Confirm the exact model, product number and any serial-number break before using a callout. Open the image to inspect the detail.

Compare other models in RV toilets and toilet parts.

Before you order

Does the family name guarantee fit?

No. Match the full model and original part number, then check configuration, dimensions and connections where relevant. Do not substitute a similar-looking component without confirmation.

Where do I find current prices and availability?

Open the linked product. This guide deliberately omits fixed prices and stock promises so a saved price or old stock count cannot mislead you.

What if the old number or diagram does not match?

Keep a clear photograph of the model label and the original component. Use the site’s help channel with those details before ordering; do not choose by RV make or model year alone.