Parts for your 2004 Toyota Prius-Gas struts

2004 Toyota Prius gas struts

Yes, gas struts are used on the 2004 Toyota Prius. Technical references including the Toyota Repair Manual for 2004–2009 Prius (NHW20), the Toyota Electronic Parts Catalogue (EPC), and Toyota New Car Features confirm the rear hatch (liftgate) uses a pair of gas-filled lift supports. The bonnet on this model uses a prop rod, not gas struts.

On the NHW20 Prius, the gas struts on the rear hatch do the hard yakka of supporting the tailgate so it opens smoothly and stays put overhead. They’re nitrogen-charged dampers that balance the weight of the hatch, so owners aren’t wrestling with it or copping a surprise drop on the noggin. Good struts make everyday use easier, quieter, and safer—especially when loading groceries or gear.

Routine care is light. Keep the shiny piston rods clean—just a damp cloth is fine. Don’t grease the rods, oil or silicone on the rod can damage seals and cause leaks. Make sure the ball-stud mounts and clips are snug, and don’t use the struts as grab handles when closing the hatch. If the hatch is heavy in cold weather, slow to rise, or sags at the top, the gas charge is likely fading.

• Time to replace if: the hatch won’t stay up, rises slowly or only part-way, drops in cold temps, you see oily residue on a strut, or the rods show pitting or rust.

Replacement is straightforward and typically a 15–30 minute job. Always support the hatch securely with a prop or a helper before popping the spring clips. Swap one side at a time to keep alignment tidy. Most quality replacements click on to the existing ball studs, if you’re changing studs, nip them up to the spec in the Toyota manual and point the cylinder body upwards (as per OE orientation) to keep internal lubrication over the seals. Replace in pairs so lift and damping are even, and choose the correct length and force for the NHW20 hatch—mixing specs can lead to a hatch that won’t stay up or that slams.

As part of servicing, a quick hatch-lift test and visual check yearly is smart. Many original struts fade after 5–8 years, sooner in hot climates. Fresh struts restore that easy one-hand lift and the confidence that the hatch will stay put without any dramas.

Popular questions about 2004 Toyota Prius gas struts

Do 2004 Prius bonnets have gas struts?
The bonnet uses a prop rod from factory. The gas struts are only fitted to the rear hatch on the NHW20 Prius.

How long do Prius hatch struts usually last?
Often 5–8 years, depending on climate and use. Cold weather sagging, oily film on the strut, or a hatch that won’t stay up are clear signs it’s time.

Can they be replaced at home?
Yes, with basic tools. Support the hatch safely, pop the retaining clips, and swap one strut at a time. Most owners can sort it in under half an hour.