Product Specification

Rear Left Tailgate Power Hatch Lift Support Strut for 2021-2022 Tesla Model 3 | 1551488-98-B

1. Key Specifications & Compatibility

2. Why This Brand-Grade Lift Support Strut Is Critical for Your Model 3

1. 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).
2. 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).
3. 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).
4. 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).

3. What It Actually Does (No Tech Jargon)

• 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.

4. Signs Yours Needs Replacement

• 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).

5. Why This Brand-Grade Strut Outperforms Generic Alternatives

• 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).

6. Installation & What You Receive

• 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.

7. After-Sales Support

• 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.