Parts for your 2017 Subaru Outback-Gas struts

2017 Subaru Outback gas struts

Gas struts are absolutely fitted to the 2017 Subaru Outback (BS series) on the rear tailgate. The Subaru Body/Rear Gate section of the factory service manual details the “Rear Gate Lifter” (gas-charged stay) inspection and replacement procedure, and the Subaru genuine parts catalogue lists the “Stay Assy – Back Door” LH/RH for this model year. Note: the bonnet on this model uses a prop rod from factory, not gas struts.

On the Outback, the tailgate struts are nitrogen-charged lifters that counterbalance the weight of the rear hatch so it opens smoothly, stays up confidently, and closes without a fight. On vehicles with a power tailgate, the gas struts still do the heavy lifting while the power unit manages the movement—so healthy struts are critical for correct operation and to avoid overloading the motor.

Over time, seals harden and gas pressure drops. That’s when the hatch starts sagging, opens slowly, won’t hold in wind, or needs a shoulder to nudge it up. Any oil weep on the shaft, gritty movement, or uneven lifting left-to-right is a red flag.

• Replace in pairs to keep lift balanced and prevent twisting of hinges.
• Support the hatch securely before removal—use a prop or a helper.
• Inspect the ball studs and brackets for play or corrosion, renew hardware if worn.
• For power tailgates, follow the service manual steps to disable the power unit before swapping struts.

Maintenance is simple: keep the chrome shafts clean, wipe away dust with a soft cloth, and avoid silicone or petroleum sprays on the shaft or seals—they attract grit and can damage the seals. Temperature swings affect strut force, slight sluggishness on frosty mornings can be normal, but rapid drop in warm weather isn’t.

When fitting, match OE spec force and stroke length for the 2017 Outback. Clip-on ball sockets should click home firmly, make sure retaining clips are seated. After installation, cycle the tailgate a few times to confirm smooth, even movement and proper latching. Quality OE or OE-equivalent lifters labelled as Rear Gate Stay Assembly (LH/RH) are the right pick for long service life.

FAQs

Does the 2017 Outback bonnet have gas struts?
From factory, no. The 2017 Outback bonnet uses a prop rod. Subaru’s parts catalogue and service information don’t list hood struts for this model year. Aftermarket kits exist, but they’re not OEM equipment.

How long do the tailgate gas struts usually last?
Typically 5–8 years in normal Aussie and Kiwi conditions. Heat, dust, and frequent use can shorten life. If the hatch won’t stay up or opens sluggishly, it’s time to test and likely replace both struts.

Can only one strut be replaced?
It’s strongly recommended to replace them as a pair. A single new strut paired with a tired one can twist the tailgate, stress hinges, and won’t restore full, even lift.