Dometic Toilet Ball & Shaft Kit - Plastic - Fits 300/310 Series - Part# 385310681

The Dometic Toilet Ball & Shaft Kit is the internal sealing mechanism that controls water flow in your RV's Dometic 300 and 310 series porcelain toilets. When your toilet won't hold water, runs continuously, or flushes weakly, a worn ball and shaft assembly is often the culprit. This genuine OEM replacement restores proper operation and prevents water waste in your holding tank system.

Key Features

• Genuine OEM Dometic replacement part for 300/310 series toilets
• Plastic ball and shaft assembly with reliable sealing performance
• Direct replacement — no modifications needed
• Restores proper water flow control and flush function
• Prevents continuous running and water leakage into black tank
• Easy installation for DIY RV owners

Technical Specifications

Frequently Asked Questions

Q: How do I know if my ball and shaft needs replacement?
A: Signs include water continuously trickling into the bowl, weak flush pressure, or the toilet not holding water between flushes. If the ball doesn't seal properly when you push the flush lever, replacement is needed.

Q: Will this work on my older Dometic 300 toilet?
A: Yes, this OEM part is designed for both 300 and 310 series Dometic toilets. Verify your model number on the toilet bowl or in your RV documentation before ordering.

Q: Is this a difficult installation?
A: No. Most RV owners can replace the ball and shaft in 15-20 minutes with basic tools. You'll need to access the underside of the toilet bowl and remove the old assembly, then install the new one. Your Dometic toilet manual includes step-by-step instructions.

Why Elkhart RV Parts

We specialize in hard-to-find Dometic replacement parts and ship directly from Elkhart, Indiana — the RV capital of the world. Every part is genuine OEM Dometic, backed by our expert support team. When you need the exact part to keep your RV's systems running, we have it in stock and ready to ship.