VAICO – 3987 Bonnet

VAICO 3987 Bonnet – The Ultimate Gas Spring Solution for Your Vehicle

The VAICO 3987 Bonnet is a high‑performance gas spring designed to provide smooth, reliable support and effortless opening of the engine hood (bonnet) on a wide range of vehicles. Whether you own an Audi A6, A7, Skoda, VW, or Seat, this component delivers consistent performance, durability, and ease of installation.

Key Features

• Precision Engineering: Manufactured with advanced metallurgy to withstand high pressure and temperature variations.
• Consistent Force Output: Delivers a stable, predictable lift force that keeps the bonnet securely open without excessive effort.
• Long‑Lasting Durability: Corrosion‑resistant coating protects against rust and environmental degradation.
• Easy Installation: Designed to fit standard mounting points on most V10‑style engine covers, reducing labor time.
• Compact Design: Slim profile allows installation in tight spaces without compromising performance.

Compatibility Overview

The VAICO 3987 Bonnet is engineered to fit a broad spectrum of vehicles that use the V10‑style bonnet system. Commonly supported models include:

• Audi A6 (C7) – Front bonnet
• Audi A7 – Front bonnet
• Skoda, VW, and Seat models with similar bonnet geometry
• Other V10‑compatible vehicles that require a gas spring for the engine cover

For exact fitment, consult your vehicle’s service manual or the manufacturer’s part number list. The VAICO 3987 is often referenced under alternative names such as:

• VAICO V10 – 3987 Cofano (Italian)
• VAICO V10-3987 Motorhauben (German)
• VAICO V10-3987 Ammortizzatore pneumatico cofano motore (Italian)
• VAICO V10-3987 Vérin De Capot Amortisseur De Capot (French)
• Other regional translations that denote the same component

Installation Guide

The installation process is straightforward and can be completed with basic hand tools. Follow these steps for optimal performance:

1. Preparation: Ensure the bonnet area is clean and free of debris. Remove any old or damaged gas spring if present.
2. Mounting: Align the VAICO 3987 with the designated mounting brackets on the bonnet frame. Secure it using the supplied bolts, tightening to the specified torque.
3. Connection: Attach the hydraulic cylinder to the engine cover’s support arm. Verify that the spring is fully compressed before securing.
4. Testing: Open and close the bonnet several times to confirm smooth operation. The spring should hold the bonnet at the desired angle without sagging or excessive resistance.
5. Final Check: Inspect all fasteners for tightness and ensure no leaks are present in the hydraulic system.

Performance Benefits

• Reduced Physical Effort: The gas spring’s lift force means you can open the bonnet with minimal exertion, even when it is fully loaded.
• Enhanced Safety: By keeping the bonnet securely open, the risk of accidental closure during maintenance is minimized.
• Extended Component Life: The spring’s consistent force distribution reduces wear on hinge pins and mounting hardware.
• Improved Aesthetics: A smoothly opening bonnet contributes to a cleaner, more professional appearance for the vehicle.

Maintenance Tips

Although the VAICO 3987 is designed for long‑term use, periodic checks can help maintain peak performance:

• Inspect the hydraulic cylinder for any signs of leakage or fluid discoloration.
• Check mounting bolts for tightness and replace if corroded.
• Clean the spring housing to prevent dust accumulation that could impede movement.
• Replace the spring after a significant number of cycles or if you notice any loss in lift force.

Why Choose VAICO?

The VAICO brand is synonymous with quality and reliability in automotive suspension components. The 3987 Bonnet exemplifies this reputation through:

• Rigorous testing under extreme conditions to ensure consistent performance.
• Use of premium materials that resist corrosion, fatigue, and temperature fluctuations.
• A commitment to customer satisfaction with clear documentation and support.

Conclusion

The VAICO 3987 Bonnet is the definitive choice for anyone seeking a dependable, high‑quality gas spring for their vehicle’s engine cover. Its precise engineering, broad compatibility, and user‑friendly installation make it an indispensable component for maintaining both functionality and safety in modern automotive design.