UM2 Connector 1pc 4mm PTFE tube Coupling Collet and Clamp Clip 1.75mm filament

Bowden-style 3D printers like the Ultimaker series rely on secure PTFE tube connections to prevent filament jams and under-extrusion caused by loose or slipping tubes. Without a reliable coupling collet and clamp clip, filament feeding can become inconsistent, leading to print failures.

This UM2 style coupling collet and clamp clip is designed for 4mm PTFE tubes and 1.75mm filament, providing a firm grip to maintain smooth filament flow. Commonly used in Ultimaker 2 and similar Bowden extruder setups, this West3D 3D printer part ensures your PTFE tubing stays securely connected to the extruder or hotend. It’s a simple yet essential upgrade or replacement part for maintaining consistent extrusion and avoiding filament jams in Bowden systems.

Why Upgrade?

• Prevents filament slipping and jams in Bowden extruder setups like Ultimaker 2
• Maintains consistent filament feeding for improved print quality
• Essential replacement for worn or broken PTFE tube connectors
• Compatible with standard 4mm PTFE tubing used in many Bowden printers
• Simple installation reduces downtime and print failures

Best For:

• Ultimaker 2 and Ultimaker 2 Extended users needing reliable PTFE tube connections
• Bowden-style 3D printer owners requiring secure filament path components
• DIY builders replicating UM2 style Bowden extruder systems
• Users upgrading or repairing PTFE tube couplings in 1.75mm filament printers
• West3D 3D printing supplies customers seeking OEM-quality replacement parts

Pair With the Right Filament

Ensuring a secure filament path with this coupling collet helps maintain consistent extrusion, especially when printing with flexible or standard filaments.

• PLA Filament — ideal for reliable feeding in Bowden setups
• TPU Flexible Filament — secure tube connections reduce filament buckling
• PETG Filament — consistent extrusion for durable prints