The Peter Paul 73x01130GM (likely referencing the Series 70 Model 73 solenoid valve) is a high-performance 3-Way Normally Closed valve used in automotive and racing applications to control air-operated systems. In racing and specialized vehicle setups, it is commonly used for:

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Lift Kit Activation: It is a standard component for controlling air-ride suspension and lift axles. For example, it is used to inflate "balloon bags" in lift kit systems to raise or lower an axle.

Pneumatic Shifting: Due to its "super valve" status—offering high flow in a compact size—similar Series 70 valves are often used for quick-response pneumatic shifting or "quick dump" air operations.

Wastegate/Boost Control: While less common than dedicated boost solenoids, its ability to handle high pressure (up to 350 PSI depending on the orifice) and its 3-way configuration allows it to manage air pressure to turbocharger wastegates or other pressure-sensitive components.