Parts for your 2009 Subaru Tribeca-Gas struts

2009 Subaru Tribeca gas struts — what they do and when to replace them

Technical sources confirm gas struts are relevant and fitted to the 2009 Subaru Tribeca. The Subaru Factory Service Manual for Tribeca (Body/Exterior – Rear Gate) lists gas‑charged “Rear Gate Stay” units and specifies they’re non‑serviceable, replacement items. The Subaru Genuine Parts Catalogue for 2009 Tribeca also shows left and right rear gate stay assemblies. Major OE suppliers’ catalogues (such as Stabilus/StrongArm) list direct‑fit liftgate gas struts for this model. Note: the bonnet on this vehicle uses a prop rod, not gas struts.

On a Tribeca, the gas struts take the weight of the tailgate and help it lift smoothly, then hold it safely at full height. They’re sealed, nitrogen‑charged dampers designed to work quietly in the background—until they get tired. Age, temperature swings, and dust on the shaft seals slowly reduce their lift force, which is why tailgates can start to feel heavy or drop in colder weather.

As part of routine servicing, it’s smart to give the tailgate struts a quick check. Look for these tell‑tales:

• Tailgate feels heavy, won’t stay up, or drops suddenly—especially on chilly mornings.
• Slow or jerky opening, or needing a helping shove to get started.
• Oily film or dampness around the rod seal, or clicking/creaking at the ball sockets.

Replacement is straightforward and best done in pairs so lift and balance are even. Always support the tailgate with a prop or a helper before popping the spring clips off the ball joints. Swap one side at a time, keep fingers clear of the hinge line, and orient the new strut with the rod pointing down unless the supplier specifies otherwise. Tighten the hardware to OEM spec and check for smooth, secure operation from fully closed to fully open.

These struts are maintenance‑free: don’t lubricate the chrome rod (oils attract grit and damage seals). Just keep the rods clean with a dry, lint‑free cloth, and make sure the mounting studs are snug. Because they’re sealed and pressurised, they can’t be re‑gassed safely—once weak, they’re due for replacement. With quality parts, many owners see 5–10 years of service, but coastal climates and frequent tailgate use can shorten that. If in doubt, test on a cold day—weak struts show up quickest when it’s cool.

Popular questions about 2009 Subaru Tribeca gas struts

Do all 2009 Tribeca models have gas struts?
Yes—on the rear tailgate. Technical documentation (Subaru Service Manual and Genuine Parts Catalogue) lists gas‑charged “Rear Gate Stay” units for this model. The bonnet uses a manual prop rod, so there aren’t bonnet gas struts from factory.

Should tailgate struts be replaced in pairs?
Definitely. Replacing both ensures balanced lift and proper holding force. Mixing an old weak strut with a new one can twist the tailgate, stress the hinges, and shorten the life of the new unit.

Can Tribeca gas struts be re‑gassed or lubricated?
No. They’re sealed, nitrogen‑charged units and not serviceable. Lubricating the rod can damage the seal by holding grit. If they’ve gone soft or are weeping oil, replacement is the right fix.