Parts for your 2007 Lexus Is-Gas struts

Are gas struts used on the 2007 Lexus IS?

Short answer: they’re not. For the 2007 Lexus IS (IS250/IS350 sedan), factory documentation doesn’t list gas struts on the bonnet or the boot. Lexus/Toyota’s Electronic Parts Catalogue (EPC) diagrams for the GSE20/21 series show a bonnet support rod (not gas dampers) and a boot lid with torsion bars rather than gas lift supports. The Lexus Repair Manual on Toyota’s Techinfo (TIS) platform illustrates the same setup in the Body sections for the hood/bonnet and luggage compartment lid.

What does that mean on the car? The bonnet is held up by a simple prop rod, and the boot lid is counterbalanced by torsion springs. There are no factory gas struts to replace on either end of the vehicle. Also worth noting: the 2007 IS uses double wishbone front and multi-link rear suspension, not MacPherson struts, so “gas struts” in the suspension sense don’t apply either. While the shock absorbers are gas-pressurised, they’re not structural “struts”.

Why didn’t Lexus fit gas struts here? A few practical reasons show up in workshop and parts literature:

• Packaging and boot access: torsion bars keep the boot opening wide with no strut tubes intruding into luggage space.
• Weight and cost: a prop rod is light, robust, and cheap to service, torsion bars are long-lived and low maintenance.
• Reliability: fewer seals and pressurised components means fewer age-related failures over time.

If an owner wants the convenience of a self-lifting bonnet, there are aftermarket hood strut kits around for the 2nd‑gen IS. A few tips before fitting a kit: make sure the brackets suit the specific chassis (GSE20/21/22/25), check clearance at full open and close, and avoid drilling into reinforced bonnet frames. Any install should keep clear of wiring and earth points near the guards. After fitting, confirm the bonnet latch engages cleanly and doesn’t need excessive slam force.

For regular servicing on a 2007 IS without gas struts, the best moves are: keep bonnet hinges lightly lubricated, replace a loose or brittle prop-rod grommet/clip, and lubricate boot hinges. If the boot’s torsion bars feel weak or the lid pops too aggressively, adjustments or replacement are possible—but be cautious. Torsion bars store energy, adjustments are best handled by a trained tech using the correct procedure from TIS.

• Does a 2007 Lexus IS have gas struts on the bonnet or boot?
  From factory, no. The EPC and Lexus Repair Manual show a bonnet support rod and boot torsion bars, with no gas lift supports fitted to the sedan.
• Can gas struts be added to the bonnet?
  Yes, via aftermarket kits designed for the 2nd‑gen IS. Choose a reputable kit, follow torque specs for brackets, and check bonnet alignment and latch operation after installation.
• Are the suspension “struts” gas struts on a 2007 IS?
  The IS uses double wishbone front and multi‑link rear suspension, so there are no MacPherson struts. The dampers are typically gas‑pressurised shocks, but they aren’t the same as body lift gas struts.