Parts for your 2009 Toyota Bb-Gas struts

2009 Toyota bB gas struts — fitment, purpose, and service advice

Based on Toyota’s Electronic Parts Catalogue (EPC) for the QNC20/QNC21/QNC25 series and the Toyota body repair/service manuals, the 2009 Toyota bB uses gas‑charged back door “stay assemblies” (tailgate gas struts). Aftermarket technical catalogues from major strut makers also list rear hatch gas struts for 2005–2016 bB models. The bonnet on this model is supported by a prop rod, not gas struts. So gas struts are absolutely relevant to the 2009 Toyota bB—specifically for the tailgate/hatch.

On the 2009 Toyota bB, gas struts make the tailgate easy to lift and keep it safely held open. They’re nitrogen‑charged dampers that counterbalance the hatch weight and control its movement, so the door doesn’t slam down or rise too quickly. In daily use—school runs, shopping, weekend missions—they add a heap of convenience and safety.

Like any wear part, tailgate struts lose pressure over time. Cold weather often shows the first signs, with a hatch that won’t stay up on chilly mornings. Other giveaways include needing a hand to lift the door, a tailgate that sags or drops, oily residue on the strut body, or creaks and jerks in the last bit of travel.

• Inspect at least yearly or every 15,000 km for smooth action and secure end fittings.
• Keep the chrome rods clean and dry—don’t grease them, as that attracts grit and damages seals.
• Replace struts in pairs to keep lift and latch alignment even.
• Choose the correct force rating and length for the bB’s build code and trim.

Replacement is straightforward but should be done with the hatch safely supported. Pop the retaining clips at each end, swap the strut, and ensure the sockets fully seat on the ball studs. Rod‑down orientation is typical to keep internal lubrication where it’s needed. After fitting, check the hatch opens smoothly, stays up at full travel, and latches cleanly without needing a slam.

Service life varies with climate and use, but five to ten years is common. If the hatch is getting heavy or unpredictable—especially when it’s windy—it’s time for fresh gas struts. For clarity, the 2009 bB’s bonnet uses a prop rod, so bonnet gas struts are not applicable to this vehicle.

• Does the 2009 Toyota bB have gas struts on the bonnet?
  No. The bonnet is held by a manual prop rod. Gas struts are fitted to the tailgate/hatch only.
• How often should the tailgate gas struts be replaced?
  There’s no fixed interval. Replace when they can’t hold the hatch up or need help to lift—often between 5–10 years depending on climate and use. Inspect them annually.
• Can just one gas strut be replaced?
  It’s best to replace in pairs. A single new strut can twist the hatch, stress hinges, and give uneven lift, especially in colder weather.