Description
Genuine Dometic Replacement Seat & Cover for 320/321 Series Gravity-Flush Toilets
Refresh your Dometic 320 or 321 series toilet with this genuine OEM seat and cover in white. Featuring a closed-style design with a scratch-resistant ceramic inlay that stays that way, this seat and lid replacement restores both comfort and appearance if your existing seat is cracked, stained, loose, or the hinges have worn out. Designed to be roughly 30 percent lighter than purely ceramic toilets, this replacement maintains the anatomically respectful design and durable finish your Dometic 320 series toilet was built with.
Compatible With:
- Dometic 320 Series gravity-flush toilets
- Dometic 321 Series gravity-flush toilets
Key Features:
- Genuine Dometic OEM replacement part
- Scratch-resistant ceramic inlay finish
- Closed-style seat and cover design
- 30% lighter than purely ceramic toilet seats
- White finish to match standard 320/321 series toilets
- Limited 90-day warranty
How to Confirm This Is the Right Seat & Cover for You
This seat and cover kit is designed for Dometic 320 and 321 series toilets in white. If your toilet is bone-colored, you'll want part #385311864 instead. Since compatibility can vary by specific model/PNC number within the 320/321 lineup, check your toilet's data plate or contact us to confirm your exact model before ordering.
Frequently Asked Questions
What's the difference between this and part #385311864?
385311863 is the white version of this seat and cover kit; 385311864 is the identical kit in bone. Choose whichever matches your toilet's finish.
Will this fit my Dometic 310 series toilet?
No — this seat and cover is specified for the 320/321 series. The 310 series uses a different seat kit (such as part #385311646 or #385311647) — check your model number before ordering.
What does "scratch-resistant ceramic inlay" mean for durability?
This finish is engineered to resist the scratches and dulling that can occur on standard toilet seats over years of use, keeping the seat looking newer for longer compared to a standard plastic or painted finish.
Is this seat significantly heavier than a standard plastic seat?
It's lighter than a purely ceramic seat (about 30% lighter) while still offering a more premium, substantial feel than basic plastic seats — a middle-ground option between weight and durability.
Why is this a special order item, and how long will it take?
This is a special order item with an estimated delivery of 2–3 weeks, since it's sourced directly from Dometic upon order.
You May Also Need
- Bone Seat & Cover Kit, 320/321 Series (part #385311864)
- Dometic Seat Mounting Hardware Kit, White (part #385311650)
- Dometic Flush Ball Seal Kit (part #385311658)
Special Order Item
Please note: This is a special order item.
- Estimated lead time: 2–3 weeks
- Lead times may vary based on Dometic manufacturing and availability
- Special order items are non-cancelable and non-returnable once the order has been placed with the manufacturer, except in the case of a warranty issue or shipping damage
- Orders containing both in-stock and special-order items may ship separately or be held until all items are available
