Parts for your 1999 Subaru Forester-Gas struts

1999 Subaru Forester gas struts — what they do and when to replace them

Technical sources confirm the 1999 Subaru Forester is fitted with gas-charged lift supports on the rear tailgate, while the bonnet uses a prop rod. This is shown in Subaru’s Factory Service Manual for the SF series (1997–2002) under the Body/Rear Gate section, the Subaru FAST parts catalogue listing “Rear Gate Stay” assemblies, and major application catalogues from Stabilus (LIFT-O-MAT) and Monroe that specify rear hatch gas struts for the model year.

On a 1999 Forester, the rear gas struts take the weight of the tailgate, helping it lift smoothly and stay put overhead. They’re nitrogen-charged dampers that deliver controlled movement without slamming, which keeps daily use fuss-free and safer when loading the boot. Over time, seals age and pressure drops, so lift performance tails off—especially in cold weather.

As part of routine servicing, it’s smart to check tailgate struts every 10,000–15,000 km or at least annually. Signs they’re past it include the hatch sagging or dropping, needing a helping hand to lift, slow or uneven rise, oily residue around the rod, or knocking noises at the ends of travel. If any of that shows up, replacement is the go.

Replacement is straightforward and best done in pairs so the force is balanced:

• Support the tailgate securely with a prop or helper.
• Pop the metal retaining clips at each end of the old struts and pull them off the ball studs.
• Press the new struts onto clean ball studs (rod points down in most applications), then confirm clips are fully seated.

Handy care tips: keep the chrome rods clean and free of nicks, don’t grease or oil the rods (it attracts grit and damages seals), avoid forcing the strut by hand, and don’t use the tailgate as a climbing handle. Quality, vehicle-specific replacements restore the original lift and are far safer than trying to “re-gas” old units—most OE-style struts are sealed and designed for replacement.

Worth noting for owners: the 1999 Forester’s bonnet is supported by a prop rod from factory. Bonnet gas strut kits exist as aftermarket upgrades, but they aren’t original fitment on this model year.

Popular questions

How long do Forester rear hatch struts usually last?
Typically 5–10 years, depending on climate and use. Heat, cold, and frequent opening all play a part. If the hatch won’t hold itself up or rises slowly, they’re due.

Can the original struts be re-gassed, or should they be replaced?
Most OE-type units are sealed and not serviceable. Re-gassing isn’t recommended. Replacing with quality, model-specific gas struts is the reliable and safer fix.

Does the 1999 Forester have bonnet (hood) gas struts?
No. It uses a bonnet prop rod from factory. Gas strut bonnet kits are available as aftermarket upgrades if desired.