Dometic / SeaLand 385311988 Macerator Rebuild Kit – MasterFlush 7100, 7200 series

Restore the performance of your Dometic MasterFlush toilet with the Dometic / SeaLand Macerator Rebuild Kit (Part #385311988). This OEM replacement kit is designed to rebuild the macerator assembly in select MasterFlush 7100 and 7200 series toilets, helping eliminate grinding noises, weak flushing, and discharge problems caused by worn macerator components.

Over time, the macerator blade and internal wear parts can dull or accumulate debris, reducing the toilet’s ability to properly grind and pump waste. The 385311988 rebuild kit provides the critical replacement components needed to restore proper macerator operation and extend the life of your MasterFlush system.

This kit is an ideal solution for repairing a toilet that still has a working motor but is experiencing poor discharge performance or loud macerator operation.

⚠️ Special Order Item – Typically ships in 7–14 business days.

Key Features

• OEM Dometic / SeaLand Replacement Part – Designed specifically for MasterFlush macerator systems
• Restores Macerator Performance – Replaces worn internal components that affect grinding and discharge
• Cost-Effective Repair – Rebuild the macerator instead of replacing the entire pump assembly
• Improves Flush Efficiency – Helps eliminate clogs, grinding noise, and slow waste evacuation
• Durable Components – Built for long service life in marine and RV sanitation systems

Compatible Dometic MasterFlush Toilet Models

This macerator rebuild kit is compatible with the following Dometic / SeaLand MasterFlush two-piece macerator toilets:

These models use the Orbit macerator system, which relies on internal cutting blades to grind waste before pumping it to the holding tank.

When Should You Replace the Macerator Components?

The macerator rebuild kit is commonly needed if you notice:

• Loud grinding or rattling noises during flush cycles
• Weak or slow discharge from the toilet
• Frequent partial clogs in the discharge line
• The macerator motor runs but waste does not evacuate properly

Replacing worn macerator parts can restore full flushing performance without replacing the entire toilet or pump assembly.

Product Details

Frequently Asked Questions

Does this kit include the macerator motor?
No. This kit contains the internal rebuild components for the macerator assembly. If the motor itself has failed, the full macerator pump assembly may be required.

Is this compatible with all MasterFlush toilets?
No. This rebuild kit is designed specifically for the 7100, 7160, 7200, and 7260 series MasterFlush toilets listed above.

How often do macerator parts need replacement?
It depends on usage, but many systems require service after several years of regular use, especially if debris or scale dulls the macerator blade.

Is this an OEM Dometic part?
Yes. Part 385311988 is an original Dometic / SeaLand replacement component.