What Are Bonnet Struts and Where Are They Used?
Bonnet struts, also known as hood struts, are components designed to support and hold open a vehicle bonnet safely. They use compressed gas to provide a controlled lifting force, allowing the bonnet to open smoothly and remain securely in place without the need for a manual prop.
Benefits of Bonnet Struts
One of the main advantages of using bonnet struts is improved access to the engine compartment. With the bonnet held securely open, both hands are free for inspection, maintenance, or repairs.
Bonnet struts also enhance safety by preventing the bonnet from slamming shut unexpectedly, reducing the risk of injury or damage to vehicle components.
Types of Bonnet Struts
There are several types of bonnet struts available, each designed to suit different vehicle requirements.
Gas Bonnet Struts
Gas struts are the most common type of bonnet strut. They use pressurised gas, typically nitrogen, to create lifting force. When the bonnet is opened, the gas compresses to hold it securely in position.
Hydraulic Bonnet Struts
Hydraulic struts use fluid, usually oil, to provide controlled lifting support. These are less common in modern vehicles but may be found in specific applications.
Mechanical Bonnet Struts
Mechanical struts rely on springs or mechanical linkages to support the bonnet. While simple, they offer less smooth operation compared to gas struts.
When to Replace Bonnet Struts
Over time, bonnet struts can lose pressure or wear out. Common signs that replacement is needed include:
- Bonnet no longer stays open
- Bonnet drops suddenly
- Visible oil leakage on the strut
- Increased effort required to lift the bonnet
Replacing worn bonnet struts promptly ensures continued safety and ease of use.
Replacing Bonnet Struts Safely
Replacing bonnet struts is usually a straightforward task that many vehicle owners can perform themselves.
- Support the bonnet securely before removal
- Remove retaining clips from the old struts
- Install new struts in the correct orientation
- Test operation carefully before closing fully
Important: Bonnet struts should always be replaced in pairs to ensure balanced lifting and even support.
Conclusion
Vehicle bonnet struts improve safety, convenience, and accessibility under the bonnet. With options including gas, hydraulic, and mechanical struts, selecting the correct type for your vehicle ensures reliable support and smooth operation.
Frequently Asked Questions
What are bonnet struts used for?
Bonnet struts are used to support and hold open a vehicle bonnet, allowing safe and hands-free access to the engine compartment.
Are bonnet struts the same as hood struts?
Yes, bonnet struts and hood struts refer to the same component, with the term depending on regional language usage.
How long do bonnet struts last?
Bonnet struts typically last between 5 and 10 years, depending on usage, vehicle type, and environmental conditions.
Should bonnet struts be replaced in pairs?
Yes, replacing bonnet struts in pairs ensures balanced lifting force and prevents uneven wear or sudden bonnet closure.
