best liftgate struts

best liftgate struts

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Understanding Liftgate Struts: Function, Maintenance, and Replacement

Liftgate struts, also known as lift supports or gas springs, are an integral component of vehicles equipped with rear liftgates or hatches. These struts play a crucial role in providing support and stability to the liftgate, allowing for smooth opening and closing motions. In this article, we’ll delve into the function of liftgate struts, discuss maintenance tips to prolong their lifespan, and explore the process of replacing them when necessary.

The Function of Liftgate Struts

Liftgate struts are designed to assist in the lifting and lowering of the rear liftgate or hatch of a vehicle. They are typically made of durable materials such as steel and feature a gas-filled cylinder mechanism. When the liftgate is opened, the struts expand, exerting force to support the weight of the liftgate and hold it in an open position. Conversely, when the liftgate is closed, the struts compress, providing resistance to prevent the liftgate from slamming shut.

Signs of Failing Liftgate Struts

Over time, liftgate struts may begin to wear out due to continuous use and exposure to environmental factors. Some common signs of failing liftgate struts include:

  1. Difficulty in Lifting: If you notice that the liftgate feels heavier or requires more effort to open, it could indicate weakening liftgate struts.
  2. Inability to Stay Open: The liftgate may not stay open on its own or may sag when fully raised, suggesting that the struts are losing their ability to provide adequate support.
  3. Sagging or Drooping: Visible sagging or drooping of the liftgate when open is a clear sign of failing liftgate struts.
  4. Squeaking or Hissing Noises: Unusual noises such as squeaking or hissing during the operation of the liftgate may indicate leaking gas from the struts.

Maintenance Tips for Liftgate Struts

Proper maintenance can help extend the lifespan of liftgate struts and ensure their optimal performance. Here are some maintenance tips to keep in mind:

  1. Regular Inspection: Periodically inspect the liftgate struts for signs of wear, damage, or leakage. Look for any visible cracks, dents, or oil residue on the surface of the struts.
  2. Keep Clean: Keep the liftgate and strut mounting points clean and free of dirt, debris, and corrosion. This helps prevent premature wear and ensures smooth operation.
  3. Avoid Slamming: Avoid slamming the liftgate shut, as this can put unnecessary strain on the struts and lead to premature failure.
  4. Replace in Pairs: If one liftgate strut fails, it’s recommended to replace both struts simultaneously, even if the other strut appears to be functioning normally. This helps maintain balanced support and ensures consistent performance.

Replacing Liftgate Struts

When liftgate struts begin to show signs of wear or failure, timely replacement is essential to restore the proper functioning of the liftgate. Here’s a general guide on how to replace liftgate struts:

  1. Gather Materials: You’ll need replacement liftgate struts compatible with your vehicle, as well as any necessary tools such as a screwdriver or socket wrench.
  2. Secure the Vehicle: Park the vehicle on a flat surface and engage the parking brake for safety.
  3. Support the Liftgate: Use a support mechanism such as a prop rod or assistance from another person to hold the liftgate in the open position.
  4. Remove Old Struts: Locate the mounting points of the liftgate struts and remove any retaining clips or bolts securing them in place. Carefully detach the old struts from the liftgate and vehicle body.
  5. Install New Struts: Align the new liftgate struts with the mounting points and secure them in place using the provided hardware. Ensure proper orientation and alignment of the struts.
  6. Test Operation: Once the new struts are installed, test the operation of the liftgate by opening and closing it several times to ensure smooth movement and proper support.
  7. Final Inspection: Conduct a final inspection to verify that the liftgate struts are securely installed and functioning correctly.


Liftgate struts are essential components of vehicles equipped with rear liftgates or hatches, providing support and stability for smooth opening and closing motions.

By understanding their function, recognizing signs of failure, and following proper maintenance practices, you can prolong the lifespan of liftgate struts and ensure the continued functionality of your vehicle’s rear liftgate.

If replacement becomes necessary, following the outlined steps can help you safely and effectively replace liftgate struts to restore optimal performance.

Our Pick For Best liftgate struts

ZONFANT Left & Right 2Pcs Electric Rear Tailgate Power Liftgate Support Strut



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