Bowden Tube Coupler G1/8 PC4-01 1.75mm for CR6-SE / Ender 3 Neo

This G1/8 thread PC4-01 pneumatic fitting is a direct replacement for the PTFE tube coupler found on the stock hotend of Creality CR-6 SE and Ender 3 Neo printers. It secures the Bowden tube firmly in place, ensuring consistent filament feed and retraction without play or leakage.

If you’re experiencing intermittent under‑extrusion, erratic retraction, or the PTFE tube slipping out of the hotend, this quick connector is the simple, low‑cost fix you need.

Key Features

• G1/8 male thread – Standard thread size for many Creality hotends (CR-6 series, Ender 3 Neo, and some Ender 3 V2 variants with all‑metal hotend conversions).

• PC4-01 design – Accepts 4mm outer diameter PTFE (Bowden) tube with a secure, push‑to‑connect mechanism.

Compatibility

This connector is a direct fit for the following printers (stock hotend or replacement hotends using the same thread):

Important: If your printer uses a standard M6 coupler (e.g., original Ender 3), do not buy this. This is specifically for G1/8 threaded hotends.

When to Replace

• The PTFE tube can be pulled out too easily (teeth inside the fitting are worn).
  

• You notice inconsistent extrusion or print defects after the Bowden tube has been inserted/removed several times.

• You are rebuilding a CR-6 SE or Ender 3 Neo hotend and want to replace all wear‑prone parts.

What is Included:

• 1 x G1/8 PC4-01 male straight quick connector