Parts for your 2012 Nissan Pathfinder-Gas struts

2012 Nissan Pathfinder gas struts: what they do and when to replace them

Technical sources including the Nissan Pathfinder R51 Service Manual (Body/Exterior and Liftgate sections), Nissan Genuine Parts catalogues, and common fitment guides from Stabilus and Monroe confirm that the 2012 Nissan Pathfinder (R51) uses gas struts on the rear tailgate. The bonnet is supported by a manual prop rod, not gas struts. So yes—gas struts are absolutely relevant on this model, specifically for the tailgate.

On the Pathfinder, those rear gas struts do the heavy lifting, counterbalancing the tailgate so it opens smoothly and stays put without a fuss. Inside each strut is pressurised nitrogen with a dab of oil for damping, which together provide a controlled lift and soft close. Over time, pressure bleeds off and seals wear, especially with lots of beach trips, dust, or winter chills across NZ and Aussie climates, and the tailgate can start dropping or refusing to stay up.

Tell-tale signs they’re due: you’re propping the tailgate with a shoulder, it rises slowly or only in warm weather, there’s a faint hiss or oil mist around the rod, or it won’t hold at full height. Don’t ignore it—weak struts are a safety risk.

• Replace in pairs to keep lift even and prevent twisting of the tailgate.
• Match the correct length, end fittings, and force rating (N) for the R51 tailgate per the parts catalogue.
• Support the tailgate with a mate or a prop while swapping struts, those clips can let go quickly.
• Keep the chrome rods clean, avoid grease on the rod itself (it collects grit and kills seals). A light lubricant on the pivot ball can help prevent squeaks.
• Expect service life around 5–8 years depending on use and climate, cold mornings often show failures first.

Replacement is a straightforward job with basic tools: pop the retaining clips, swap the strut, click the clips home. If the tailgate alignment or closing effort feels off afterward, have a workshop check the hinges and latch. Quality OE-equivalent struts with stainless or painted bodies handle coastal conditions better, which is handy for Kiwi and Aussie lifestyles where surf trips and towing are part of the routine.

Are bonnet gas struts fitted to the 2012 Pathfinder?

No. The R51 Pathfinder uses a manual prop rod for the bonnet. Only the rear tailgate is factory-fitted with gas struts, as outlined in Nissan’s service documentation and parts listings.

What are the signs the tailgate struts are failing?

Slow lift, needing to “help” it up, sagging in cold weather, or a tailgate that won’t hold at full height are the big giveaways. You might also see a light oil film on the rod. If it’s inconsistent across temperatures or drops suddenly, replace them ASAP for safety.

Can they be replaced at home?

Yes, if you’re handy. Support the tailgate securely, then swap one side at a time. Clip-on ends make it quick, but use eye protection and don’t pry the clips right off—just lift them enough to release. If in doubt, a workshop can do it in short order.