The Dometic 3-Inch Spigot Floor Flange Kit is a critical replacement component for RV toilet installations, providing a secure, leak-proof seal between your Dometic toilet and the waste holding tank. This OEM floor flange assembly is designed specifically for 3-inch spigot connections and includes all necessary components for a complete toilet base seal replacement. If you're experiencing leaks around your toilet base, odors in your RV, or preparing to replace an aging toilet, this genuine Dometic flange kit ensures proper fit and reliable performance.

Key Features

• Complete Flange Assembly: Includes floor flange, mounting hardware, and sealing gasket for a complete installation
• 3-Inch Spigot Design: Engineered for standard 3-inch waste connections found in most Dometic RV toilets
• Leak-Proof Seal: Premium gasket material creates a watertight, odor-blocking seal between toilet and holding tank
• Durable Construction: Heavy-duty materials resist chemical breakdown from waste tank treatments and cleaners
• Direct OEM Replacement: Genuine Dometic part designed to exact factory specifications for reliable fit
• Easy Installation: Includes all mounting hardware needed for straightforward replacement

Technical Specifications

Part Number	385343765
Spigot Size	3 inches
Connection Type	Floor flange with gasket seal
Material	Chemical-resistant plastic with rubber gasket
Kit Contents	Floor flange, mounting hardware, sealing gasket
Application	Dometic RV toilet base installation

Frequently Asked Questions

How do I know if I need to replace my toilet floor flange?

Common signs include water or waste leaking around the toilet base, persistent sewer odors in your RV even after cleaning, a rocking or unstable toilet, or visible cracks in the existing flange. If you're removing an old toilet, it's best practice to replace the flange and gasket as preventive maintenance.

Will this flange kit fit my Dometic toilet model?

This 3-inch spigot floor flange is designed for most standard Dometic RV toilets with 3-inch waste connections. Measure your existing flange opening or check your toilet's specifications to confirm the 3-inch size. If you're unsure about compatibility with your specific model, contact our parts specialists with your toilet model number.

What tools do I need to install this floor flange kit?

You'll typically need a screwdriver or drill, adjustable wrench, putty knife (to remove old sealant), and plumber's tape or RV-approved sealant. The installation process involves removing the old toilet, cleaning the floor surface, installing the new flange with the included hardware, and reinstalling your toilet with a fresh seal.

Can I reuse the old gasket or do I need to replace it?

Never reuse an old toilet gasket. This kit includes a new sealing gasket that should always be installed fresh to ensure a proper leak-proof seal. Old gaskets compress and lose their sealing ability over time, and reusing them will likely result in leaks and odor problems.

Why Choose Elkhart RV Parts?

At Elkhart RV Parts, we specialize in hard-to-find Dometic replacement parts that keep your RV systems running smoothly. Located in Elkhart, Indiana — the RV Capital of the World — we understand the importance of genuine OEM components for critical systems like your waste plumbing. We stock authentic Dometic parts and ship them fast, so you can get back on the road with confidence. Our parts specialists have decades of combined RV experience and can help you identify exactly what you need for your repair.