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3mirrors Engine Air Valve Holder Pressure Pipe M10 M12 M14 M18 Thread to 1/4 NPT w/Ball Valve, Cylinder Leakage Testing Tool for Most LS Engine Compatible with Mustang Ford GM

3mirrors Engine Air Valve Holder Pressure Pipe M10 M12 M14 M18 Thread to 1/4 NPT w/Ball Valve, Cylinder Leakage Testing Tool for Most LS Engine Compatible with Mustang Ford GM

$33.18 USD
$33.18 USD
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About this item

  • Hose kit comes with M10, M12, M14 and M18 threads to NPT with ball valve air pump quick connector, the inner hole is a 1/4NPT threaded interface. Engine Air Valve Holder is widely use in almost all LS engines. It can be used for gasoline engine, car, truck, boat, motorcycle, ATV, etc. (Can't be used for diesel engines)
  • This air valve hose kit works when replacing valve springs or valve stem seals, pressurizing the cylinder to help keep the valve closed with compressed air. Damaged parts can also be diagnosed by the sound and location of engine leaks during compression.
  • Hose I.D. : 3/8" /9.5mm. Working pressure: 30PSI≤P≤300PSI (2BAR≤P≤20BAR), allows simply access to spark plug hole and air supply. Air pressure helps prevent the valve from falling into the combustion chamber.
  • The sparkplug must be removed and Install the joint on the location of the spark plug when using the pressure hose with M10+M12 or M14 +M18 thread to NPT.
  • If you have any more questions for this engine air valve holder pressure pipe kit, please feel free to let us help. Thanks!

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Reviews

  • ⭐⭐⭐⭐⭐

    Michael Turner — Chicago, Illinois

    GarageNest has a practical selection of tools and vehicle-care supplies. The items I ordered were easy to understand, useful for regular maintenance, and simple to organize in my garage. Everything fit naturally into the way I already take care of my vehicle.

  • ⭐⭐⭐⭐⭐

    Daniel Foster — Austin, Texas

    I found several useful garage essentials without having to search through unrelated products. The descriptions made it easier to compare the options, and the tools have been convenient for routine checks and small maintenance projects around the garage.

  • ⭐⭐⭐⭐⭐

    Lauren Mitchell — Denver, Colorado

    I like that the products feel practical without being overly complicated. I picked up a few items for cleaning, inspection, and basic vehicle care, and they have helped make my garage setup more organized and my maintenance routine easier to manage.

  • ⭐⭐⭐⭐⭐

    Jason Reed — Portland, Oregon

    The supplies I ordered fit well into my usual vehicle-care routine. They were straightforward to use, easy to store, and helpful for keeping frequently used tools and maintenance items ready whenever I need them.

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FAQ

What types of products does GarageNest sell?

GarageNest offers automotive maintenance tools, diagnostic equipment, battery accessories, lifting supplies, tire service tools, detailing products, garage organizers, work lights, and workshop safety essentials.

How much does shipping cost?

We generally charge a flat shipping fee of $6.90 per order. Any applicable shipping charge will be displayed at checkout before payment is completed.

How long does order processing take?

Orders are generally processed within 1–3 business days, Monday through Friday, excluding public holidays. Processing may take up to 5 business days during busy periods.

How long will delivery take?

Estimated delivery within the United States is 5–10 business days after processing. International delivery generally takes 10–20 business days. Delivery times are estimates and may vary.

How can I track my order?

Tracking information will be sent to the email address used during checkout when it becomes available. Tracking updates may take approximately 2–5 business days to appear after a shipping label is created.

Can I change or cancel my order?

Please contact us as soon as possible. Orders may be eligible for cancellation or modification within 12 hours only if processing or fulfillment has not started. Changes cannot be guaranteed.

What is your return policy?

Eligible unused and uninstalled products may generally be returned within 30 days of delivery. Products must include their original packaging, components, manuals, and accessories. Prior return authorization is required.

What should I do if my item arrives damaged, defective, or incorrect?

Contact us within 7 days of delivery and include your order number, a description of the issue, and clear photos of the product, packaging, and shipping label. Please keep all original materials until we provide instructions.

How do I know whether a product is compatible with my vehicle?

Review the product description, dimensions, part numbers, voltage requirements, installation details, and compatibility notes before ordering. Compatibility may vary by make, model, year, trim, engine, and previous vehicle modifications.

How can I contact GarageNest customer support?

Email us at livguevictfeit@gmail.com. Please include your order number when your question relates to a purchase. We generally respond within 1–2 business days, Monday through Friday.

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