Parts for your 2008 Subaru Outback-Gas struts

2008 Subaru Outback gas struts — what they do and when to replace them

Gas struts are absolutely relevant to the 2008 Subaru Outback. Subaru’s Factory Service Manual for the 2005–2009 Legacy/Outback (BP/BL) platform identifies gas‑charged “stay” units fitted to the rear tailgate, and Subaru’s genuine parts catalog lists complete rear gate stay assemblies for MY2008 Outback models. The bonnet on this model uses a mechanical prop rod (not gas struts), which is also noted in Subaru service and owner documentation. So, for a 2008 Outback, gas struts are fitted to the tailgate and are a normal service item over the life of the vehicle.

On the Outback, the tailgate gas struts are those tidy, pressurised cylinders that quietly take the weight of the hatch and keep it up without a wobble. They make everyday use easier and safer — fewer head knocks, less wrestling the gate on a windy day, and a smoother open/close feel that suits a well-kept Subaru wagon.

Over time, the nitrogen charge and internal seals can lose their oomph. That’s why a quick check of tailgate struts is worth adding to routine servicing. If the gate lifts slowly, droops, or needs a helping hand — especially in cold weather — the struts are telling their story. A faint hissing, oily film at the rod, or a gate that won’t stay up in a breeze are other giveaways.

• Best practice for replacement: always change struts in pairs to keep lift and balance even.
• Support the tailgate securely during the job — a prop or helper is a must.
• Fit the new struts with the cylinder body up where specified, avoid twisting the rod.
• Keep the chrome shafts clean and dry, don’t grease or paint them.

Quality matters. Choose struts matched to the 2008 Outback tailgate spec so the opening force and hold height feel right. With normal use, many sets last 5–10 years, but climate and load (bike racks, glass weight, accessories) can shorten that. A quick function test every service — open the gate, feel for smooth travel, and confirm it holds at full height — helps pick issues before they turn into safety hazards.

When they’re fresh, the Outback’s tailgate pops up confidently and stays put. When they’re tired, swapping them out is a small, satisfying fix that keeps the car feeling newer than its years.

• Signs they’re due: tailgate sags, slow lift in cold weather, oily residue on the shaft, or audible straining.
• What not to do: don’t push the gate closed with your body weight or contaminate the shafts — that shortens strut life.

Popular questions about 2008 Subaru Outback gas struts

Do 2008 Outback bonnets have gas struts?
The 2008 Outback bonnet uses a prop rod, not gas struts. Gas‑charged struts are fitted to the rear tailgate only on this model, as detailed in Subaru service literature for the BP/BL series.

How long do the tailgate struts typically last?
It varies with climate and use, but 5–10 years is common. If the tailgate drops, lifts sluggishly (worse on cold mornings), or shows oil on the shaft, it’s time to replace — ideally as a pair.

Can just one strut be replaced?
It’s technically possible, but not recommended. Pair replacement keeps opening force balanced, prevents twisting loads on the hinges, and restores the proper lift height and feel.