Parts for your 2007 Toyota Bb-Gas struts

2007 Toyota bB gas struts — fitment, purpose and smart servicing tips

Gas struts are absolutely relevant on the 2007 Toyota bB. On this model (QNC20/21/25 series), the rear tailgate uses gas-pressurised lift supports, while the bonnet is held up by a manual prop rod. This is confirmed by Toyota’s Electronic Parts Catalogue for the bB, which lists a “Stay, Back Door” (back door/tailgate gas strut) for the model range, and by Toyota service literature that shows a bonnet support rod rather than bonnet struts. Major aftermarket catalogues (e.g., Stabilus LIFT-O-MAT and Monroe Max-Lift applications) also list rear tailgate gas struts for the 2005–2016 Toyota bB generation. So if the hatch is getting heavy or drops down, the gas struts are the first place to look.

On the 2007 bB, the job of the tailgate gas struts is simple: they counterbalance the weight of the rear door so it lifts smoothly and stays up without a fuss. When they start to fade, owners will notice slow or uneven lifting, a need to “help” the hatch up, or worse, the tailgate drifting down unexpectedly. A light oil mist around the rod seals or creaking at the ball joints is also a giveaway.

Replacement is straightforward and usually done in pairs to keep lift and hold balanced. Support the tailgate safely (broom handle, prop rod, or a mate lending a hand), pop off the spring clips at the ball sockets, and swap them over one at a time. Fit them with the rod pointing down where applicable to keep the internal seals lubricated. Don’t clamp the strut body in a vice and don’t twist the rod—both can ruin the seal. Refit the retaining clips fully and give the hatch a few cycles to bed in.

There’s no fixed service interval in Australia or New Zealand, lifespan depends on climate and usage. Expect around 5–10 years, with coastal or high-heat environments shortening that. Keep the chrome rods clean—just a soft cloth, no grease or silicone on the rod—and check the mounting studs and brackets for looseness. If bolts are removed, tighten to the workshop manual specification and make sure the ball sockets are seated squarely to avoid side-loading.

Cold mornings will make any gas strut feel lazier, but if the hatch won’t stay up or you’re ducking to avoid a head knock, it’s time. Choose OE or quality aftermarket units matched to the bB’s specific model code, Toyota and reputable brands publish force ratings and lengths for an exact fit. Dispose of old struts responsibly—they’re pressurised, so don’t puncture or burn them.

• Signs it’s time: heavy hatch, slow lift, tailgate drop, oily residue on strut.
• Best practice: replace in pairs, support the door, keep rods clean, avoid lubricants on the rod.
• Parts choice: match by model code and mounting type, follow manufacturer torque specs.

Popular questions about 2007 Toyota bB gas struts

Do 2007 Toyota bB models have bonnet gas struts?
No. The 2007 bB uses a manual prop rod for the bonnet. Gas struts are fitted to the rear tailgate only, as shown in Toyota’s repair information and parts listings. If someone’s looking for bonnet lift assists, that would be an aftermarket modification rather than factory kit.

How often should the tailgate gas struts be replaced?
There’s no set interval. Replace when they no longer hold the hatch up reliably or need help lifting. In Aussie and Kiwi conditions, many last 5–10 years. Coastal air, heat, and frequent use can shorten their lifespan, so keep an eye on performance and any oil misting at the rod.

Can just one gas strut be replaced?
It’s technically possible, but not recommended. Replacing in pairs keeps lift force even and prevents the hatch twisting or loading one side. A fresh strut paired with a tired one often leads to poor hold and premature wear.