As a core supporting component of the power-operated rear tailgate
for 2021–2022 Tesla Model 3, this premium brand-grade rear left lift support strut (Part No. 1551488-98-B) is
exclusively engineered to match the specifications of Tesla’s
original power hatch system. It works in tandem with the tailgate’s
electric drive unit to provide stable support when the tailgate is
open, smooth cushioning during closing, and precise force control
throughout the tailgate’s movement. A worn or faulty strut leads to
issues like sagging tailgates, jerky opening/closing, or even
sudden drops—this brand-grade replacement restores the safe,
seamless tailgate operation your Model 3 was designed for.
This strut is more than a “support rod”—it’s integral to the safety
and functionality of your Model 3’s power tailgate:
- Stable Tailgate Support: When the power tailgate opens to its maximum angle, the strut
uses high-pressure nitrogen force to offset the tailgate’s weight,
keeping it firmly in place. This prevents dangerous sagging, sudden
dropping, or unintended closing (critical for loading/unloading
cargo or placing items in the trunk).
- Smooth Electric Operation: It synchronizes with the tailgate’s electric motor to regulate
movement speed—ensuring the tailgate opens/closes at a steady,
quiet pace (no jerky motions or loud creaks that damage the
electric drive unit over time).
- Cushioning & Safety: Acts as a buffer during the final stage of tailgate closing,
reducing impact between the tailgate and body (avoids scratches or
wear on the tailgate latch and body trim).
- Protects Electric Components: By bearing the tailgate’s weight, it reduces strain on the power
tailgate’s motor and gears—preventing premature failure of
expensive electric parts (a common issue with faulty,
underperforming struts).
- Holds the Tailgate Open: When you press the tailgate button (inside the car, on the key
fob, or via the Tesla app), the electric motor opens the
tailgate—and this strut “locks” it in the open position, so it
won’t fall down on your hands while you load groceries, luggage, or
other items.
- Makes Closing Smooth: When closing the tailgate (electrically or manually), the strut
slows the tailgate’s descent—no slamming shut, which could damage
the tailgate’s latch or the car’s body.
- Works in All Weather: It handles snow, rain, and extreme heat without breaking—even in
freezing temperatures, it won’t get stiff or lose the ability to
support the tailgate.
- Matches Factory Feel: Unlike cheap generic struts, this one feels exactly like the
original—no “weak” support that makes the tailgate droop, or “too
strong” force that strains the electric motor.
Don’t ignore these red flags—they mean your rear left power
tailgate strut is worn or faulty:
- Tailgate Sags When Open: The power tailgate opens fully but slowly droops downward (even
when parked on level ground), risking injury or damage to items in
the trunk.
- Jerky Opening/Closing: The tailgate moves in fits and starts (not smoothly) when opening
or closing—often accompanied by loud creaking or clicking sounds
from the strut area.
- Difficult Manual Override: If you need to close the tailgate manually (e.g., during a power
outage), it feels unusually heavy or hard to push down (signals the
strut isn’t providing proper cushioning).
- Visible Damage: The strut cylinder is dented, rusted, or leaking oil (oil leakage
means nitrogen gas is escaping, and the strut will soon fail
completely).
- Tailgate Doesn’t Stay Open: The power tailgate closes automatically shortly after opening
(the Model 3’s safety system detects insufficient support and
triggers a “fail-safe” close).
Generic lift support struts lack the precision and durability
needed for Model 3’s power tailgate—this brand-grade option fixes
their key flaws:
- Tesla-Spec Force Rating: Calibrated to 450–500 N (generic struts often have inconsistent
force, either too weak to support the tailgate or too strong to
damage the electric motor). It matches the original strut’s force
output exactly.
- Leak-Proof Construction: Uses high-density rubber seals and a seamless steel cylinder
(generic struts use low-quality seals that leak gas within 6–12
months). This strut maintains pressure for 5+ years.
- Perfect Power Tailgate Fit: Designed exclusively for 2021–2022 Model 3’s power tailgate
mounting points (generic struts may have mismatched ball joints,
requiring modification to the tailgate or body).
- Corrosion Resistance: Zinc-plated ball joints and anti-rust cylinder coating (generic
struts rust quickly in rain/snow, leading to seized joints and
noisy operation).
- 1x Rear Left Tailgate Power Hatch Lift Support Strut (1551488-98-B)
- 2x Brand-spec protective dust boots (for the ball joints,
preventing dirt buildup and extending joint life)
- Digital Installation Guide: Step-by-step photos, how to safely
support the power tailgate (use a sturdy prop to avoid sudden
drops), disconnect the old strut’s ball joints (no special
tools—use a flathead screwdriver to release the retaining clips),
and install the new strut.
Note: Basic DIY skills recommended. Installation takes ~15 minutes
(the guide includes a critical safety tip: never remove both struts
at once—always replace one strut at a time to keep the tailgate
supported). No need to disconnect the tailgate’s electric wiring—
the strut installs independently of the power system.
- Warranty: Backed by a limited warranty. For detailed coverage terms (e.g.,
duration, eligible defects like gas leakage, force loss, or joint
failure), please reach out to our team.
- Technical Assistance: Our EV specialists have experience with Model 3’s power tailgate
systems—they’re available via email or chat to answer questions
(e.g., "how to safely support the tailgate during installation" or
"how to confirm compatibility with your 2021/2022 Model 3 build
date") and help you complete the process smoothly.
Ready to Restore Your Model 3’s Power Tailgate Performance?
This premium brand-grade lift support strut fixes sagging, jerky,
or unsafe tailgate operation, bringing back the seamless, reliable
power hatch experience your Tesla was designed for. For inquiries
about availability, bulk order options, or to discuss details that
fit your needs (e.g., confirming compatibility with your specific
2021–2022 Model 3 variant), click "Contact Us" or send a message
via the chat box—our team will respond promptly to assist you.
Ships worldwide with tracked delivery. For custom timeline requests
or additional product details, don’t hesitate to reach out.