The Dometic Sani Sump Assembly Kit is the complete waste collection system for your VacuFlush RV toilet. This essential component stores and manages black water from your toilet system, making it a critical part for any RV owner with a Dometic vacuum flush toilet. If your sump is cracked, leaking, or not holding waste properly, this OEM replacement kit restores full functionality.

Key Features

• Complete sump assembly with all necessary seals and gaskets included
• OEM Dometic part—exact replacement for your VacuFlush system
• Designed to prevent leaks and odor escape
• Easy installation with no modifications required
• Compatible with all standard VacuFlush toilet models
• Durable plastic construction rated for RV use

Technical Specifications

Frequently Asked Questions

How do I know if my sump assembly needs replacement?

Signs include visible cracks or damage to the sump, persistent leaks around the toilet base, black water pooling under the toilet, or foul odors that won't go away despite cleaning. If your toilet stops holding vacuum or you notice waste backing up, the sump may be compromised.

Is this kit complete, or do I need additional parts?

This kit includes everything needed for a complete sump replacement—the assembly body, seals, gaskets, and mounting hardware. You should not need additional parts for installation on compatible VacuFlush models.

Will this fit my specific RV model?

This part is designed for Dometic VacuFlush toilet systems. To confirm compatibility with your exact RV model and toilet version, check your owner's manual or contact our expert support team with your RV year, make, and model.

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 Dometic stock, backed by expert support to help you identify and install the right component for your system. When you need it to work, we deliver the parts that matter.