Parts for your 2018 Nissan Pathfinder-Gas struts

2018 Nissan Pathfinder gas struts — what they do and when to replace them

Gas struts absolutely are used on the 2018 Nissan Pathfinder — specifically on the rear liftgate — while the bonnet is held up by a manual prop rod. This isn’t just hearsay: the Nissan Electronic Service Manual (R52, 2018) includes removal/installation for the “Back Door Stay (gas strut)” and the Nissan parts catalogue lists the component under back door/liftgate hardware. Major aftermarket catalogues (Stabilus Lift-O-Mat, Monroe, StrongArm) also list gas-charged lift supports for the 2018 Pathfinder’s tailgate, including variants for power liftgate models. So yes, gas struts are relevant on this model.

On the Pathfinder, the gas struts counterbalance the liftgate’s weight so it opens smoothly, holds steady at full height, and won’t slam shut. Even on power-liftgate trims, the electric drive unit relies on the struts to take the load, protect the motor, and keep movement controlled. Inside each strut is pressurised nitrogen and a small amount of oil that provide damping and support.

As part of routine servicing, it’s smart to check the tailgate struts. Look for oil mist around the rod seal, listen for creaks, and note any sagging or slow rise — especially in cold weather. Keep the chrome rods clean and dry, don’t grease them, as that attracts grit and can chew the seals. Typical service life is 5–8 years depending on climate and usage, so 2018 vehicles may be due now.

• Liftgate won’t stay up or drops suddenly
• Needs a hard shove to start opening
• Opens unevenly or with jerky motion
• Power liftgate strains, beeps, or reverses
• Visible oil on the strut body or rod

Replacement is straightforward but should be done in pairs to keep balance. Support the liftgate safely, then flick back the retaining clips and swap each strut, matching orientation and ball-stud sizes. Avoid budget units with the wrong force or length — they can stress hinges and the power actuator. Never heat or puncture old struts, they’re pressurised.

For power liftgates, follow the Nissan ESM procedure to initialise/relearn the opening height after fitment. Workshops typically allow 0.3–0.6 hours for the job, expect a touch more if calibration is required. Quality OE-equivalent brands are recommended for smooth, quiet operation and long life.

Do 2018 Pathfinders have bonnet struts?

No. The R52 Pathfinder uses a prop rod under the bonnet from factory. The Nissan service literature details the hood support rod, not gas struts. Aftermarket bonnet-strut kits exist if owners want a hands-free lift, but they’re a modification rather than a factory part.

How long do the tailgate gas struts last, and what do they cost to replace?

Many last 5–10 years. In Australia and New Zealand, a quality pair typically runs AU$120–AU$250/NZ$130–NZ$270, plus about 20–40 minutes labour. Power-liftgate calibration may add a little time. Prices vary with brand and workshop rates.

Can Pathfinder gas struts be re-gassed?

Not practically. They’re sealed units, once the nitrogen charge or seal is gone, replacement is the reliable fix. Re-gassing rarely holds and isn’t recommended on safety grounds.