The Jabsco 37004-1000 Toilet Base Assembly is the replacement base designed.
Features:
In the exploded diagram of the Owner's Manual, the Part ID: #6
The Base to Bowl O-ring Seal (P/N: 44101-1000) is NOT Included
Assembly Includes:
Base Assembly
Phillips Head Screw
Washer, Starlock
Hex Nut (Two places)
Washer, Plastic
Washer Stainless steel
Nut Cap
Joker Valve
1" Discharge Port
Screw
The Base to Macerator O-ring Seal
