John Guest 1/4-Inch Union Connector - PI0408S-US

John Guest USA 1/4 Inch Union Connector - PI0408S-US

Make a clean spec-match tubing connection with this universal/spec-match John Guest USA 1/4 Inch Union Connector - PI0408S-US. This push-to-connect union connector joins two matching sections of plastic tubing in refrigerator water, ice maker, filtration, or beverage-line service applications.

PI0408S-US is a universal/spec-match John Guest USA push-to-connect union connector for refrigerator water line, ice maker line, filtration, and beverage tubing service where the tubing size and material requirements match.

Application: Universal/spec-match refrigerator water line, ice maker line, filtration, and beverage tubing applications that use the exact tube outside diameter and push-to-connect style.

Fitment / What To Verify: Verify the tubing outside diameter on both sides, John Guest series, material compatibility, pressure/temperature requirements, and whether the application uses potable water. This is a spec-match fitting, not model-specific appliance compatibility.

Please confirm tube outside diameter and application requirements before ordering.

Is it time to replace?

• Common Symptoms: Water seepage at a tubing joint, cracked old connector, line repair after cutting out a damaged section, or a tubing route that needs a straight union.
• Visible/Sensory Cues: Cracked fitting body, damaged collet, tubing that will not lock, or a scratched tube end that leaks after insertion.

Pro Tip: Cut tubing square, fully insert to the tube stop, and tug gently to confirm the tube is locked before restoring water pressure.

Technical Specifications

Legacy part number(s)/code(s): PI0408S

Please note: These legacy parts have been replaced by this item. They may not look exactly the same, but the manufacturer of these appliances has assured us that they will function properly.

If you have questions, please message us before ordering so we can address your concerns. Please review our Return Policy before purchasing.