Replace your worn or cracked Dometic RV toilet seat and cover with this genuine OEM replacement. This white seat and cover assembly is designed specifically for Dometic 300, 310, and 320 series toilets, the most common gravity flush models found in travel trailers and motorhomes. A functional toilet seat is essential for comfort and sanitation on the road.

Key Features

• Genuine OEM Dometic part — exact fit for 300/310/320 series toilets
• White color matches original equipment
• Includes both seat and cover assembly
• Durable plastic construction designed for RV use
• Easy bolt-on installation — no special tools required
• Replaces cracked, stained, or missing seats

Technical Specifications

Specification	Detail
Part Number	385311420
Color	White
Compatible Models	Dometic 300, 310, 320 Series
Assembly Type	Seat and Cover
Material	Plastic

Frequently Asked Questions

Will this seat fit my Dometic toilet?
This seat is designed for Dometic 300, 310, and 320 series toilets. Check your toilet model number on the bowl or in your RV manual to confirm compatibility before ordering.

How do I install this replacement seat?
The seat bolts directly to your existing toilet bowl. Simply remove the old seat by unbolting it from underneath, then align the new seat and tighten the bolts. Most installations take 5–10 minutes with basic hand tools.

Can I order just the seat without the cover?
This part includes both the seat and cover as an assembly. If you only need one component, contact our customer service team — we may have individual parts available.

Why Elkhart RV Parts

We specialize in hard-to-find Dometic RV replacement parts and ship directly from Elkhart, Indiana — the RV capital of the world. Every part we sell is genuine OEM equipment backed by expert customer support. Whether you need a quick replacement or have questions about fitment, our team is here to help you get back on the road.