M12-1.75X99 HF Bolt for Tesla Model 3/Y (2017-) | 1461643-00-A

1. Key Specifications & Compatibility

2. Why This Brand-Grade HF Bolt Is Critical for Your Model 3/Y

1. Withstands High-Stress Loads: [109] steel’s 1000 MPa tensile strength is calibrated to bear the weight and force of components like suspension control arms (which absorb road shocks and vehicle weight). Low-grade bolts (e.g., 8.8-grade steel, 800 MPa) bend or snap under such stress, leading to poor handling, uneven tire wear, or even loss of component control.
2. Corrosion Protection for High-Exposure Areas: ZNFL+CMAT coating prevents rust in undercarriage areas where salt, water, and debris accumulate. Generic bolts rust quickly here, seizing to nuts or threaded holes and making future maintenance impossible without drilling (a costly, time-consuming fix).
3. Perfect Factory Fit for Stress Points: Exact thread pitch (1.75mm) and shank length (99mm) ensure the bolt seats fully in factory mounting points—no gaps that cause vibration, no over-insertion that damages component internals. Generic bolts with mismatched dimensions often require “forcing” installation, which strips threads or warps components.
4. Vibration-Resistant Holding Power: The ISO-standard coarse threads lock tightly with factory nuts, avoiding loosening from constant vehicle vibration (a common issue with generic bolts that have inconsistent thread spacing). This prevents rattling, accelerated component wear, or sudden bolt failure.

3. What It Actually Does (No Tech Jargon)

• Holds Heavy Parts Secure: This bolt fastens high-stress components like suspension control arms to your Model 3/Y’s chassis—think of it as a “super-strong screw” that keeps these heavy parts stable, even when you hit potholes, drive over curbs, or brake suddenly.
• Won’t Rust or Get Stuck: Its double corrosion protection means it won’t rust, even if you drive in snowy areas (where roads are salted) or rainy climates. Rusty bolts in the undercarriage often get stuck so tight you have to cut them out—this one stays usable for years, making repairs easy.
• Tough Enough for Daily Use: Unlike cheap bolts that bend when you tighten them or snap under stress, the [109] steel is strong enough to handle Tesla’s recommended torque (70–80 Nm) without damage. It won’t fail unexpectedly, even with daily driving or rough road conditions.
• Fits Like It Came From the Factory: It’s the exact size and thread pattern Tesla uses—no guessing if it will fit, no damaging the car’s mounting holes. You can install it quickly without modifying the vehicle or using extra washers.

4. Signs You Need to Replace This Bolt

• Visible Rust/Flaking: The bolt’s surface is rusted, peeling, or discolored (the ZNFL+CMAT coating has failed, and the steel is weakening—risk of breakage under load).
• Bolt Damage: The bolt is bent, has a cracked head, or stripped threads (can’t be safely tightened, or will loosen during driving; stripped threads may also damage factory mounting holes).
• Loose or Noisy Components: The part fastened by this bolt (e.g., suspension control arm) feels wobbly, or you hear clunking/rattling noises from the undercarriage—signals the bolt is stretched, worn, or not holding properly.
• Post-Repair Replacement: If you’re servicing suspension, crossmember, or drive unit components that use this bolt, always install a new one (used bolts may have hidden stress damage that causes sudden failure—even if they look undamaged).
• Seized Bolt: The old bolt was stuck (rusted in place) and had to be drilled out or cut during maintenance—you need a new bolt to resecure the component safely (reusing a seized bolt’s threads risks further damage).

5. Why This Brand-Grade Bolt Outperforms Generic Alternatives

• Genuine [109] Steel Strength: Generic bolts claim “high strength” but use 8.8-grade steel (800 MPa) that fails under mid-to-heavy loads. This bolt uses authentic [109] steel (1000 MPa), matching Tesla’s factory strength standards for reliable performance.
• Dual Corrosion Protection vs. Single Plating: Generic bolts use thin zinc plating that rusts in 6–12 months. The ZNFL+CMAT double treatment here lasts 5+ years, resisting corrosion in undercarriage areas where generic bolts fail.
• Precision Threads vs. Inconsistent Cuts: Generic bolts have uneven threads that strip factory holes, loosen over time, or require over-tightening to stay secure. This bolt’s ISO-standard 1.75mm pitch fits Model 3/Y’s holes exactly, avoiding permanent damage to the vehicle’s mounting points.
• Torque Compliance vs. Breakage Risk: Generic bolts break when tightened to Tesla’s 70–80 Nm spec or stretch and loosen over time. This bolt is calibrated to handle the factory torque range, ensuring a secure fit that lasts for years (no need for re-tightening).

6. Installation & What You Receive

• 1x M12-1.75X99 HF Bolt (1461643-00-A)
• Digital Installation Guide: Step-by-step tips to ensure safe, correct installation, including:
  • Recommended tools: Torque wrench (to apply 70–80 Nm accurately—do not use impact wrenches, as they over-tighten and damage the bolt, threads, or component).
  • Prep steps: Clean mounting holes with a soft brush to remove debris (debris can cause uneven torque, stripped threads, or component misalignment; wipe the bolt’s threads with a clean cloth to remove dust).
  • Safety note: Never reuse old bolts—hidden stress or coating wear can lead to unexpected failure, especially for high-stress components like suspension mounts. Always use a new brand-grade bolt.

7. After-Sales Support

• Warranty: Backed by a limited warranty. For detailed coverage terms (e.g., duration, eligible defects like coating failure, thread damage, or material weakness), please reach out to our team.
• Technical Assistance: Our EV specialists have hands-on experience with Model 3/Y’s fastener systems—they’re available via email or chat to answer questions (e.g., “Which specific components use this bolt?” or “How to confirm torque specs for my 2023 Model 3?”) and help you resolve installation issues smoothly.