Parts for your 2013 Subaru Outback-Gas struts

2013 Subaru Outback gas struts — what they do and when to replace them

Gas struts are absolutely relevant to the 2013 Subaru Outback. Factory documentation in the Subaru Service/Body Manual for the 2010–2014 Outback details removal and installation of the rear gate “gas stay” units, and the Subaru genuine parts catalogue lists left and right rear gate stays for this model. Major aftermarket fitment catalogues for lift supports also specify direct replacements for the 2013 Outback’s rear hatch. The bonnet on this generation uses a prop rod, not gas struts, so the fitted gas struts are for the tailgate only.

On a 2013 Outback, the pair of rear gas struts counterbalance the weight of the tailgate so it lifts smoothly, stays up securely, and closes with predictable effort. A healthy set makes loading the boot far easier and much safer, especially on uneven ground or in windy conditions common across Australia and New Zealand.

As part of regular servicing, it’s smart to give the struts a once-over. Look for slow lifting, the hatch dropping in cooler weather, a spongy feel at mid‑stroke, visible oil mist on the shaft, bent rods, or cracked end fittings. Any of these point to internal gas loss or seal wear. Because the struts share the load, replacement is best done in pairs to keep opening and holding force balanced.

Replacement is straightforward with basic tools: support the tailgate with a prop, flick back the retaining clips, and swap one strut at a time onto the existing ball studs. Inspect the ball pins for corrosion and the clips for tension before refitting. Avoid lubricants on the chrome shaft—just keep it clean and free of grit. In hotter regions, UV and heat can shorten service life, in colder climates the gas contracts and weak struts show up quickly.

There’s no set interval, but many Outbacks need new struts around the 5–8 year mark or sooner if the vehicle often parks tail-first on a slope. Choosing OE-equivalent or reputable aftermarket units with the correct force rating ensures the hatch lifts without launching skyward or sagging. A fresh pair restores that easy one-hand lift-and-hold feel owners expect.

• Tell-tales they’re tired: hatch won’t hold up, rises slowly, or needs a shove to start moving.
• Best practice: replace both sides, support the hatch, and verify secure clip engagement.

Popular questions about 2013 Subaru Outback gas struts

How can someone tell the rear gas struts are failing?
Common signs include the tailgate sagging or dropping, slow or jerky opening, needing two hands to lift, or a faint oil film on the strut shaft. Symptoms are often worse on cold mornings because the internal gas pressure drops with temperature.

Should both gas struts be replaced at the same time?
Yes. Replacing them as a pair keeps opening forces balanced, prevents twisting at the hinges, and delivers consistent lift and hold. Mixing an old weak strut with a new strong one usually leads to poor performance and can stress fittings.

Does the 2013 Outback bonnet have gas struts from factory?
No. The bonnet uses a prop rod on this generation. Aftermarket conversion kits exist, but factory literature and parts listings show no OEM bonnet gas struts for the 2013 model.