Keep the rear hatch rising smoothly and holding steady with the Stabilus Liftgate Lift Support 4B-816941 (also written 4B816941), a temperature-compensating gas-charged strut with dynamic speed control. It's a direct-fit replacement for the 2011 Toyota Sienna — see the Buyer's Guide tab for engine-level fitment. This is the Stabilus LIFT-O-MAT with Temperature Compensating Valve (TCV), designed to deliver OE-equivalent performance on vehicles built with temperature-compensation systems.
Measuring 22.05 inches, this lift support helps restore the smooth, controlled hatch motion of the original equipment. Worn gas struts often let the liftgate drift down, feel weak, or open slowly — if a failed support is the cause, this replaces it. For best results, replace both supports in pairs so each side raises and holds evenly.
What vehicle does the 4B-816941 fit?
It's a direct-fit liftgate lift support for the 2011 Toyota Sienna. See the Buyer's Guide tab to confirm engine-level fitment for your vehicle.
What does the temperature compensating valve do?
The internal temperature-sensitive valve automatically adjusts gas force with conditions — adding holding force in cold weather and easing force in heat for smoother, more consistent operation.
Should I replace both lift supports at once?
Stabilus recommends replacing them in pairs for best results, so both sides raise and hold the liftgate evenly. This listing is for one support.
What are signs my lift support needs replacing?
A liftgate that drifts down, opens slowly, feels weak, or won't stay up can signal a worn gas strut. If a failed support is the cause, this part replaces it.
Are special tools required to install it?
No. It's based on the OE design for proper fit, form, and function and requires no special tools. Consult the vehicle service information for the correct procedure.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
