Moen 1255 31MM Cartridge Handle Replacement
A Moen Duralast® single-handle replacement cartridge used to restore proper operation and stop leaks in compatible Moen faucets that specify the 31 mm cartridge.
Key Features
- 31MM cartridge handle replacement (Duralast® 1-handle cartridge)
- Moen key feature: includes plastic retaining nut
- SupplyHouse lists application as Bathroom
Compatibility & Applications
- Identified by Moen as the Duralast® replacement 1-handle cartridge for models 1255 & 160657.
- Must only be used where the manufacturer specifies this exact part number: 1255 (and/or 160657 where applicable).
Installation & Operation Notes
- Installation should be performed by a qualified plumber/installer or an experienced DIYer.
- Follow the faucet's service/installation documentation and Moen's cartridge installation guide.
- Manufacturer safety note: turn water supply OFF before disassembly; open the faucet handle to relieve pressure and confirm water is fully shut off.
- Moen guidance on reassembly: identify the existing cartridge nut type - reuse a brass cartridge nut if present; if the nut is plastic, replace it with the new plastic nut. Tighten the nut by hand until tight, then rotate an additional 90° (1/4 turn) with a wrench.
Maintenance & Troubleshooting
- This part is commonly replaced to address leaks at the faucet base or poor handle/valve operation tied to a worn cartridge.
- Moen's documentation emphasizes correct nut identification and proper tightening; user feedback also notes mineral buildup can affect sealing and may require cleaning the valve body/mating surfaces during service.
User Reviews & Q&A Summary
- Review themes frequently describe it as a perfect OEM match that fixes leaks and restores normal faucet operation.
- Many users report the repair is quick and straightforward (often described as a short job) and appreciate that the package includes instructions and needed components.
- Common purchase feedback highlights good pricing and fast delivery.
- A few practical notes appear: some users needed to clean calcium/mineral deposits first and/or re-tighten after initial seating for a fully leak-free result.