Parts for your 1998 Toyota Avensis-Gas struts

1998 Toyota Avensis Gas Struts

Based on technical references, gas struts are relevant to the 1998 Toyota Avensis (T22 series), but only on certain body styles. The Liftback and Wagon/Estate use gas-charged struts on the rear hatch/tailgate, while the Sedan’s boot uses torsion bars rather than gas struts, and the bonnet is supported by a manual prop rod. This is corroborated by the Toyota Electronic Parts Catalogue (T22 EPC: “Stay, Back Door” listed for Liftback/Estate, no hood/bonnet stay), Toyota Avensis Owner’s Manual (1998) describing the bonnet prop rod, the Haynes Toyota Avensis 1998–2003 manual detailing tailgate strut replacement on Liftback/Estate, and major aftermarket catalogues (e.g., Stabilus/Monroe) listing rear door gas springs for Avensis 1997–2003 Liftback/Wagon.

Where gas struts are not used (bonnet and Sedan boot), Toyota opted for a simple prop rod and torsion-bar hinge system. These are lighter, cheaper, and robust, with fewer sealing surfaces to fail. Bonnet gas struts weren’t factory-fitted on most Toyota passenger cars of this era, reducing cost and complexity. The sedan boot’s hinge geometry favours torsion bars for consistent opening effort without needing pressurised struts.

For 1998 Avensis Liftback and Wagon owners, the gas struts on the rear hatch are the unsung heroes that make life easy. They’re nitrogen-charged dampers that lift and hold the tailgate securely, controlling the speed so it doesn’t thump open or—worse—drop on a windy day. Over time, the internal seals wear and the charge bleeds off, especially in cooler Aussie and Kiwi mornings, so the hatch might sag or need a helping hand.

As part of regular servicing, it’s smart to give the tailgate struts a quick check. Signs they’re on the way out include a hatch that won’t stay up, slow or uneven rise, a faint hiss, or a light oily film on the rod. A simple test is to open the hatch halfway in cool weather—if it drifts down, they’re tired. Don’t grease the polished rod, just keep it clean from dust and road grime.

When replacement time comes, always swap them in pairs to keep lift and damping balanced. Support the hatch with a prop or a mate’s shoulder, then release the clip or fastener at each end and click the new struts on. Choose the correct force rating and length for the specific body style, spoilers or tailgate accessories can change the load, so stick with OE-equivalent parts. Re-gassing old units isn’t recommended—new struts are the reliable fix. After fitting, cycle the hatch a few times to settle the ball joints and confirm smooth, controlled movement. With quality replacements, they’ll typically last many years and plenty of kilometres, keeping the Avensis practical and safe on the daily.

• Check operation at every service, especially before winter.
• Replace in pairs, avoid contaminating the rod.
• If Sedan or bonnet: no gas struts fitted from factory—prop rod/torsion bars are normal.

Popular questions

Are bonnet gas struts fitted to the 1998 Toyota Avensis?

No. The T22 Avensis uses a manual prop rod for the bonnet from factory. Aftermarket bonnet strut kits exist, but they’re not OEM and may require bracketry, many owners stick with the reliable prop rod.

How long do Avensis tailgate struts last, and when should they be replaced?

It varies with climate and use, but many sets last 5–10 years. Replace them when the hatch won’t stay up, needs help to lift, or drops in cooler weather. Always change both sides together.

Can tired gas struts be re-gassed, or should they be replaced?

Re-gassing is not generally recommended for automotive hatch struts. Replacement with OE-spec units is the dependable solution and usually more cost-effective.