Ensure proper vacuum routing in your Porsche with the Vacuum Line Connector 3 Way Y Fitting 928-573-727-02, designed for 4 mm vacuum hoses used on Porsche models from 1983 to 1995. This connector supports stable engine performance by maintaining correct airflow and preventing vacuum leaks that can affect idle quality, throttle response, or emissions functions.

Manufactured from high strength molded plastic, this OEM style connector provides a secure seal and precise fitment for critical vacuum circuits. Ideal for intake refresh projects, engine bay restoration, or replacing brittle original fittings in aging Porsche systems.

Key Features

• OEM Style 3 Way Y Fitting designed specifically for 4 mm Porsche vacuum lines

• Compatible with Porsche Models from 1983 to 1995 across multiple platforms

• Restores Vacuum Integrity to support stable idle and engine performance

• High Strength Molded Construction resists cracking, heat, and chemical exposure

• Prevents Vacuum Leaks that cause rough running or inconsistent air valve operation

• Simple Direct Fit for emissions, intake, or ignition vacuum circuits

• Ideal for Maintenance and Restoration of older Porsche vacuum systems

Frequently Asked Questions (FAQ)

1. What size vacuum line does this connector fit?
It is designed for 4 mm vacuum hoses used on many Porsche models from 1983 to 1995.

2. What systems use this vacuum Y fitting?
It may be used in intake air valves, idle control, emissions equipment, fuel vapor recovery, ignition advance systems, and general vacuum routing.

3. Why should I replace old vacuum connectors?
Aging plastic becomes brittle and can crack, causing vacuum leaks that lead to poor idle, hesitation, or incorrect air fuel behavior.

4. Is this a direct replacement for Porsche part number 928-573-727-02?
Yes, it matches the factory design for accurate replacement and secure hose fitment.

5. What symptoms indicate a failing vacuum connector?
Common signs include rough idle, hissing noises, vacuum loss codes, or inconsistent engine behavior under load.

6. Can this fitting be used in custom vacuum routing?
Yes, as long as the vacuum line size is 4 mm, it can be used in OEM or custom vacuum configurations.