Stabilus 4081FD Gas Spring, bonnet

Stabilus 4081FD Gas Spring – Bonnet

Stabilus 4081FD is a high‑performance gas spring designed specifically for the bonnet (hood) of automotive vehicles, most notably the Audi A6 and C4 series. This component delivers reliable lift and support through its precisely engineered gas chamber, ensuring smooth operation and extended service life.

Key Features

• Force Rating: 380 N (Newton) – optimal for medium‑to‑heavy duty bonnet applications.
• Length: 943.5 mm – engineered to match the original equipment specifications of the Audi A6/C4 platforms.
• Construction: Stainless steel housing with a robust gas cylinder, providing resistance against corrosion and mechanical wear.
• Compatibility: Designed for left‑hand side installation on vehicles such as the Audi A6 C4 Avant (4A5) and other models within the same chassis family.
• Installation Type: Bonnet lift‑spring – replaces or upgrades the factory gas spring to improve lifting performance and reduce fatigue.

Technical Specifications

Applications and Vehicle Compatibility

The Stabilus 4081FD is engineered to fit a wide range of vehicles that use the same bonnet geometry. Primary applications include:

• Audi A6 (C4) – both sedan and Avant variants, model years 1994‑1997.
• Other European luxury sedans with similar bonnet lift mechanisms.

Its design ensures that the spring aligns perfectly with the factory mounting points, providing a seamless replacement experience without the need for extensive modifications.

Installation Guide

1. Preparation: Secure the vehicle on a stable lift and remove any existing bonnet gas spring if present.
2. Mounting: Align the new Stabilus 4081FD with the bonnet mounting bracket, ensuring that the gas cylinder is oriented correctly (left‑hand side).
3. Securing: Tighten all fasteners to the manufacturer’s torque specifications. Verify that the spring is fully seated and free of obstructions.
4. Testing: Lower the bonnet slowly, observing for smooth operation and confirming that the gas spring provides adequate support throughout the travel range.

Performance Benefits

• Consistent lift force across the entire travel path, reducing strain on the bonnet hinges.
• Improved durability due to high‑quality stainless steel construction and precise gas pressure control.
• Reduced maintenance requirements thanks to corrosion‑resistant materials and sealed gas chamber.

Maintenance Tips

While the Stabilus 4081FD is designed for long life, periodic checks can extend its service interval:

• Inspect mounting bolts for tightness every 10,000 km or after any major impact event.
• Check for visible signs of wear or corrosion on the housing and cylinder.
• Avoid exposing the spring to extreme temperatures beyond its rated range.

Conclusion

The Stabilus 4081FD Gas Spring – Bonnet offers a reliable, high‑quality solution for automotive bonnet lift applications. With its precise force rating, robust construction, and proven compatibility with popular vehicle models, it delivers superior performance and longevity, making it an excellent choice for both OEM replacements and aftermarket upgrades.