First in the Industry with a TWO Year Warranty

Shocker Positive Air Shutoff System


Manufacturer of the ShockerPASS positive air shutoff system. A North American built air intake shutoff valve for diesel engines. We prevent diesel engine runaway by monitoring your engine RPM and shutting off the engine air supply with our valve before an engine over speed can occur. Our systems are also available in a manual operator-controlled style.

We manufacture systems for all diesel engines.

Only company in the industry with a FULL TWO year warranty on all components.
No hourly or mileage limits.

Just received our full North American patent for our products great way to start 2021.

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    A positive air shutoff system is a necessity for anyone with a diesel engine that may come in contact with natural gas, propane, or any other flammable gasses. A small leak of flammable gas is likely to cause a diesel engine to "run away", causing catastrophic damage to the engine, and surrounding area as it explodes.
    A diesel engine will utilize any fuel available, and flammable gas in the air is more than enough to keep a diesel engine running, even when the key is removed. Once a diesel engine gets a supply of flammable gas in the air, it will run indefinitely or to the point of catastrophic failure. The only way to prevent and stop this is to shut off the air supply to the engine, starving it of gaseous fuel.
    The Shocker Positive Air Shutoff System is capable of automatically sensing high-revving "run away" situations, and will automatically shut the valve, closing the air supply to the engine to protect the engine itself, as well as property and personnel in the area.

    Shocker Pass Positive Air Shutoff System

    Presentation video highlighting how our system works, our various types of smart controllers and sensors, why you should choose our valve and what options are best for you.


    Installation of Shocker Positive Air Shutoff System on a 2016 International with an ISX Cummins.

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    Last Updated: Saturday 6th of May 2023 .