Parts for your 2010 Toyota Mark x-Gas struts

2010 Toyota Mark X gas struts — what’s actually on the car?

Short answer: gas struts aren’t fitted to the 2010 Toyota Mark X sedan from factory. According to Toyota’s Electronic Parts Catalogue (GRX130/133 series) and body repair/service information, the bonnet is supported by a manual prop rod, and the boot lid uses a torsion bar/hinge system — there are no OEM gas-filled dampers listed for either end. This setup is typical for Toyota sedans of the era and is confirmed by the EPC’s body hardware sections, which show “Rod, Hood Support” and trunk torsion components rather than any “Damper, Assist” parts.

Why no gas struts? On a three-box sedan like the Mark X, a torsion bar neatly counterbalances the boot without stealing luggage space or adding much weight. It’s robust, reliable, and cheaper to service. For the bonnet, a prop rod keeps things simple, light, and cost-effective, which suits long-term reliability and ease of manufacture. Toyota reserves bonnet or tailgate gas struts more often for hatchbacks, wagons, SUVs, or premium lines, for example, the Mark X Zio (the MPV-style variant) uses tailgate gas struts, but that’s a different body altogether.

If someone’s retrofitted aftermarket gas struts to a Mark X bonnet or boot, that’s a custom mod rather than a factory feature. In that case, it’s worth treating them like any other gas strut: they do wear out over time and will eventually lose pressure.

• Inspect for oil misting around the shaft and end seals — that’s a giveaway of a strut on the way out.
• Replace in pairs if fitted to the boot or both bonnet sides, so lift and balance feel even.
• Support the panel during replacement with a prop or a mate’s help — don’t trust a tired strut.
• Use brackets and hardware designed for the GRX130 body to avoid stressing the bonnet skin or boot hinge area.

If your boot starts dropping or feels heavy on the Mark X sedan, the likely culprits are the torsion bar preload, hinge friction, or alignment — not failed gas struts. A workshop familiar with Toyota sedans can adjust or replace the relevant bits without drama.

Popular questions about 2010 Toyota Mark X gas struts

Does the 2010 Toyota Mark X have factory gas struts?
No. The GRX130/133 Mark X sedan uses a bonnet prop rod and a torsion-assisted boot hinge, as shown in the Toyota EPC and service information. There are no OEM gas struts listed for bonnet or boot on this model.

Can gas struts be retrofitted to the Mark X bonnet or boot?
Yes, aftermarket kits exist. They typically add bracketry to existing mounting points. Choose load ratings matched to the panel weight, and be mindful that over-strong struts can deform bonnet skins over time. Fit in pairs where applicable and re-check clearances after install.

Which Mark X models actually use gas struts?
The Mark X sedan (GRX130/133) doesn’t have them from factory, but the Mark X Zio (the MPV-style variant) runs gas struts on its tailgate. Different body style, different hardware needs.