Parts for your 2009 Nissan Pathfinder-Gas struts

2009 Nissan Pathfinder Gas Struts: What They Do and When to Replace Them

Based on technical sources such as the Nissan R51 (2005–2012) Factory Service Manual body section and Nissan’s parts catalogue, the 2009 Pathfinder is fitted with gas-charged lift supports on the rear tailgate. The bonnet on this model uses a prop rod rather than gas struts, so servicing attention for gas-struts centres on the rear door.

On a 2009 Nissan Pathfinder, the rear gas struts do the heavy lifting—literally. These nitrogen-charged supports counterbalance the weight of the tailgate so it opens smoothly, stays put overhead, and closes without a wrestle. When they’re healthy, they make daily use a breeze, when they’re tired, the door can drop, creep down, or refuse to lift fully—especially on cold mornings.

As part of routine servicing of your 2009 Nissan Pathfinder gas-struts, a quick check pays dividends. Look for oily residue on the strut shaft, listen for creaks, and test holding power at full lift. Because they work as a pair, replacement should be done in pairs to keep the tailgate level and reduce hinge stress. They’re a sealed unit, so re-gassing isn’t a go, once performance fades, replacement is the fix.

Handy tips for owners and techs:

• Support the tailgate safely with a prop or a mate before unclipping any strut.
• Avoid greasing the shiny shaft—lubricants attract grit and can damage seals. Just keep it clean.
• Snap-ring or ball-socket ends can be reused if in good nick, but many new struts include fresh fittings—use them when supplied.
• Cold weather often exposes weak struts first, if it sags in winter, they’re on the way out.

Most owners can expect 5–8 years from a set, depending on use and climate. Replacement is a straightforward 10–20 minute job per side with basic tools, but safety matters—those doors are heavy. After fitting, open and close the tailgate a few times to ensure smooth action and check that interior lights and the latch switch behave as they should.

Bottom line: if the Pathfinder’s tailgate won’t stay up, it’s time for fresh gas struts to bring back that easy, one-finger lift.

Popular questions about 2009 Nissan Pathfinder gas struts

How can someone tell their Pathfinder’s tailgate struts are failing?
Common signs include the tailgate sagging or slowly lowering itself, needing extra effort to lift, a clunk at the top of travel, or oily film on the strut shaft. Cold mornings often make a weak strut obvious because gas pressure drops with temperature.

If it won’t hold at full height or drops when bumped, the struts have likely lost charge and should be replaced as a pair.

Should both rear gas struts be replaced at the same time?
Yes. They work together to balance the door. Replacing just one can twist the tailgate, stress hinges, and shorten the life of the remaining old strut. Pair replacement restores even support and smooth operation.

Can 2009 Pathfinder gas struts be re-gassed, or do they need full replacement?
They’re sealed units, so re-gassing isn’t recommended. Once they lose pressure or show shaft seal leaks, the reliable fix is to fit new struts. Quality aftermarket or genuine replacements bolt straight on.