Parts for your 2016 Toyota Bb-Gas struts

2016 Toyota bB gas-struts: what they do and when to replace them

Based on technical references, gas-struts are absolutely relevant to the 2016 Toyota bB. Toyota’s Electronic Parts Catalogue for the QNC20/QNC21 bB lists gas-charged “Stay Assy, Back Door” units fitted to the rear liftgate, and the model’s service literature describes standard ball-stud mounts with clip-retained sockets. Aftermarket catalogues (e.g., Stabilus Lift-O-Mat and Monroe Max-Lift) also list tailgate gas-struts for the 2016 bB. The bonnet on this model generally uses a manual prop rod rather than gas-struts.

On a 2016 Toyota bB, gas-struts support and control the rear liftgate so it opens smoothly, stays up reliably, and closes without a slam. Inside each strut, compressed nitrogen and oil work together to provide lift assist and damping. Over years of daily use, temperature swings and seal wear gradually reduce pressure, so the hatch may stop staying up—usually at the most inconvenient time.

There’s no fixed replacement interval, but many owners see 5–10 years from the original struts depending on climate and how often the hatch is used. If the bB’s tailgate feels heavy, drops unexpectedly, won’t reach full height, or you notice an oily film around the rod seal, it’s time to swap them out. Replacement is straightforward with basic tools, but using a helper or prop to support the hatch is a must—don’t trust tired struts while you work.

• Replace in pairs to keep lift even and avoid twisting the tailgate.
• Support the door fully, then flick up each socket’s retaining clip and pull the strut off its ball-stud.
• Offer up the new strut in the same orientation, press the socket onto the ball until it clicks. Ensure clips are seated.
• Do not grease the shafts—just keep them clean. Wipe off grit with a soft cloth to protect the seals.
• Expect a slightly slower action in cold weather, persistent weakness indicates replacement is due.

During routine servicing, a quick check is simple: open the hatch fully and see if it holds steady for a few minutes without creeping down. Also look for weeping oil at the rod. If replacement is needed, quality OEM-equivalent gas-struts restore the easy one-hand lift the bB is known for and help protect hinges and latches from extra strain.

Popular questions

Does the 2016 Toyota bB have gas-struts on the bonnet?
The bonnet typically uses a manual prop rod on this model, not gas-struts. The gas-struts are fitted to the rear liftgate (“back door”) to support and control its movement.

How long do tailgate gas-struts last on a 2016 bB?
Many last 5–10 years, but life varies with climate and use. If the hatch sags, won’t reach full height, or shows oil seepage, replacement is due regardless of age or kilometres.

Should gas-struts be replaced in pairs?
Yes—replacing both at once keeps lift balanced, prevents twisting, and ensures consistent opening height and hold.