Parts for your 2022 Mitsubishi Asx-Gas struts

2022 Mitsubishi ASX gas struts — what they do and when to replace them

Gas struts are absolutely relevant on the 2022 Mitsubishi ASX. Technical references that cover this model platform — including the Mitsubishi Motors ASX/RVR/Outlander Sport (GA series) Body section for the Back Door in the factory service manual, the Mitsubishi ASA electronic parts catalogue for 2022 ASX (Back Door/Liftgate listings), and application catalogues from major gas-spring suppliers such as Stabilus, Monroe, and Tridon — all specify two gas-filled lift supports for the tailgate/boot. From factory, the bonnet uses a manual prop rod, not gas struts.

On the ASX, the tailgate gas struts make everyday life easier: they help lift the boot smoothly and hold it safely open while loading the groceries, prams, or sports gear. They’re nitrogen-charged dampers designed to deliver consistent lifting force and controlled closing, so the tailgate doesn’t slam or drift down.

There’s no fixed replacement interval in the service schedule, but gas struts are wear items. Heat, cold, contamination, and age slowly reduce gas pressure and seal performance. If the tailgate feels heavy, won’t stay up in cooler weather, or needs a hand to get past halfway, the struts are due.

• Typical signs they’re tired: tailgate droops or won’t hold, slow or jerky opening, oily film on the strut body, faint hissing, or having to “shoulder” the door in winter.
• Best practice for replacement: fit in pairs for even support, support the tailgate securely while working, match length, end fittings, and force rating to the ASX spec, and torque the fasteners/ball-studs as per service data.
• Care tips: keep the chrome rod clean and dry, don’t grease the rod (it attracts grit that chews the seals), avoid using tools on the rod, and check tailgate hinges and alignment if failure is premature.

A quality pair of direct-fit struts will restore that easy, one-hand lift. Most ASX units use simple ball-socket ends with retaining clips, so swap-over is quick with the right support and a flat-blade tool. If the vehicle has accessories like a tailgate spoiler or added weight, choose struts calibrated to suit to prevent slam or sag. With fresh struts fitted, the 2022 ASX’s boot goes back to feeling light, safe, and hassle-free to use every day.

Does the 2022 ASX have gas struts on the bonnet?

No. The factory bonnet on the 2022 ASX uses a prop rod. Gas struts are used on the tailgate/boot only. Aftermarket bonnet strut kits exist, but they’re not OEM.

How long do the ASX tailgate struts last?

Many last 5–10 years, but climate and use matter. Replace when the boot won’t stay up, opens sluggishly, or weakens in colder weather. There’s no set kilometre-based interval.

Can you replace just one tailgate strut?

It’s possible, but not recommended. Replacing both ensures balanced lift and latch alignment, and prevents overloading a single new strut.