Dometic Plugin Base Adapter Kit - 300/310/320 Series - Part# 385311056

DometicSKU: 385311056
Added to catalog: March 10, 2026
Last product update: June 4, 2026 at 6:12 PM
Last in stock: Apr 12, 2026

Sale price$73.99 Regular price$117.64
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In stock (3 units), ready to be shipped
FREE Delivery Estimate June 8 – June 11
1-Hour Cancellation Window

1-Hour Cancellation Window

You'll have 1 hour after placing your order to update your shipping address or cancel completely.

After that, we begin coordinating with our vendors to fulfill your order — at that point, cancellations and address changes usually aren't possible.

If you're unsure about anything, please reach out before ordering or cancel within the window.

The Dometic Plugin Base Adapter Kit is an essential replacement component for RV owners with Dometic 300, 310, or 320 series toilets. This adapter kit enables secure connection between your toilet base and the RV waste system, ensuring proper installation and reliable operation. If your toilet won't seat properly or you're replacing an old adapter, this genuine OEM part restores full functionality.

  • Direct replacement for Dometic 300/310/320 series toilets
  • Genuine OEM Dometic part ensures perfect fit and compatibility
  • Secure base-to-tank connection prevents leaks and movement
  • Simple installation without special tools required
  • Durable construction designed for RV waste system demands
Specification Details
Part Number 385311056
Compatible Models Dometic 300, 310, 320 Series Toilets
Component Type Plugin Base Adapter Kit
Manufacturer Dometic
Installation Type Direct Replacement

Frequently Asked Questions

Q: Will this adapter work with my Dometic toilet model?
A: This adapter kit is specifically designed for Dometic 300, 310, and 320 series toilets. Check your toilet's model number on the tank or base to confirm compatibility before ordering.

Q: Do I need any special tools to install this adapter?
A: No special tools are required. The adapter uses standard connections and can be installed with basic hand tools. Refer to your Dometic toilet manual for step-by-step installation instructions.

Q: What problems indicate I need to replace my adapter kit?
A: Signs include water leaking around the toilet base, the toilet shifting or moving when you sit on it, or difficulty getting the toilet to seat properly on the base.

Why Choose 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 Dometic stock, backed by expert support from our experienced team. When you need the exact part that fits right the first time, Elkhart RV Parts delivers.

100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

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