Ford Genuine FL3Z-99406A10-A Tailgate Shock Assembly
2025-11-15
For Ford F-150 owners, a faulty tailgate shock assembly can turn simple cargo loading into a risky hassle.
The Ford Genuine FL3Z-99406A10-A Tailgate Shock Assembly is the OEM solution designed to restore controlled, smooth tailgate operation, preventing sudden drops, protecting your vehicle, and enhancing safety.
This guide breaks down everything you need to know about this critical part, from its key features to installation tips and cost saving alternatives.
The Ford Genuine FL3Z-99406A10-A Tailgate Shock Assembly is the OEM solution designed to restore controlled, smooth tailgate operation, preventing sudden drops, protecting your vehicle, and enhancing safety.
This guide breaks down everything you need to know about this critical part, from its key features to installation tips and cost saving alternatives.
Why Replace the FL3Z-99406A10-A Tailgate Shock Assembly?
The factory tailgate shock on 2015–2020 Ford F-150 models typically wears out after 50,000+ miles, leading to frustrating and dangerous issues:
- Uncontrolled tailgate slamming that risks damage to the truck bed or cargo
- Difficulty keeping the tailgate open during loading/unloading
- Noisy operation or sudden "jerking" when lowering the tailgate
- Increased safety hazards for hands and fingers
Replacing the NEW FL3Z-99406A10-A Tailgate Shock delivers game changing benefits:
- Controlled Damping: Features viscous dampening technology that regulates tailgate movement for soft, predictable opening/closing
- Durability: Constructed from high-grade aluminum with ISO 9001-certified manufacturing
- Direct OEM Fit: No modifications required, matches factory specifications for seamless installation
- Safety First: Eliminates sudden drops to protect both your vehicle and passengers
Core Features of the FL3Z-99406A10-A Tailgate Shock
- Genuine Ford Engineering: Part number FL3Z-99406A10-A (SKU: FL3Z99406A10A), designed to meet Ford’s strict quality standards
- Viscous Dampening Cartridge: Ensures consistent performance in all weather conditions, resisting wear from temperature fluctuations
- Complete Kit: Includes all necessary mounting hardware and installation instructions
Vehicle Compatibility
The FL3Z-99406A10-A is specifically engineered for 2015–2020 Ford F-150 models, including:
- Engine options: 2.7L V6, 3.0L Diesel, 3.3L Duratec, 3.5L Cyclone, 3.5L GT DI, 5.0L Coyote
- Transmissions: 6-speed automatic (6R80), 10-speed automatic (10R80)
- Drivetrains: 2WD, 4WD (part-time), left-hand drive
Step-by-Step Installation Guide
Installing the FL3Z-99406A10-A takes ~45 minutes with basic automotive tools—here’s how:
- Safety Prep: Ensure the truck is parked on level ground, engage the parking brake, and support the tailgate to prevent accidental movement.
- Remove Tail Light: Carefully detach the rear tail light by removing 2 screws; pull straight back (avoid prying) to avoid breaking dowel pins.
- Access Mounting Points: Locate the shock assembly between the tailgate and bed frame (original part connects two mounting brackets).
- Loosen Old Shock: Use a socket set to remove mounting bolts, heat stubborn screws with a micro torch to loosen red Loctite.
- Install New Shock: Align the FL3Z-99406A10-A with mounting points, secure bolts, and reattach the taillight.
- Test Operation: Lower and raise the tailgate to confirm smooth, controlled movement (no slamming or sticking).
Pro Tips:
- Torque bolts to 18 ft-lbs for proper fitment
- Disconnect the rearview camera (if equipped) before removing the tailgate
- If you’re unsure, consult a professional mechanic or Ford’s official service manual
OEM Quality Solution from Reko Auto Parts
Why pay $76–$81 for genuine Ford parts when you can get the same performance at a fraction of the cost?
Reko Auto Parts offers the FL3Z-99406A10-A Tailgate Shock Assembly with:
Reko Auto Parts offers the FL3Z-99406A10-A Tailgate Shock Assembly with:
- 1:1 OEM specifications for perfect fit and function
- Viscous dampening technology identical to genuine Ford components
- ISO 9001-certified manufacturing and corrosion-resistant aluminum construction
- Unbeatable price: $19.99 per unit (save 70% vs. OEM!)
- 1 year warranty for peace of mind
Whether you’re replacing a broken shock or upgrading for better performance, our OEM grade FL3Z-99406A10-A delivers reliability without the premium price tag.
FAQ About FL3Z-99406A10-A Tailgate Shock Assembly
Q: Will this fit my 2021 Ford F-150?
A: No, this part is exclusively compatible with 2015–2020 F-150 models.
Contact Reko Auto Parts for 2021+ compatible alternatives.
Contact Reko Auto Parts for 2021+ compatible alternatives.
Q: Do I need to replace both tailgate shocks?
A: While not required, we recommend replacing both shocks simultaneously to ensure balanced performance and even wear.
Q: What causes the original shock to fail?
A: Common causes include age-related seal degradation, corrosion from weather exposure, and overloading the tailgate (exceeding weight limits).
Q: Is the P65 warning a safety concern?
A: No, this warning is a California regulatory requirement to inform consumers of potential chemical exposure (e.g., trace metals in materials). The product is safe for normal use.
Q: Can I install this without mechanical experience?
A: Yes, DIY installation is feasible for beginners with basic tools. Allow 45–60 minutes and follow our step-by-step guide or online tutorial videos.