Stabilus 218697 Gas Spring, bonnet

Stabilus 218697 Gas Spring – Bonnet

The Stabilus 218697 Gas Spring is a high‑performance, active gas strut designed specifically for the bonnet (hood) of BMW and ALPINA vehicles. It delivers reliable support, smooth operation, and enhanced safety by providing controlled lift and secure retention of the bonnet during opening and closing.

Key Features & Specifications

• Force Rating: 400 N (newton) – sufficient to counteract the weight of the bonnet while maintaining a gentle, user‑friendly motion.
• Length: 311 mm – matches the OEM dimensions for BMW 5 Series (F10/F11) and 6 Series (F12/F13), ensuring a seamless fit.
• Compatibility: Designed for BMW 5 Series, 6 Series, F10, F11, F12, F13, as well as ALPINA‑equipped models such as the D5 and B5/B6 conversions.
• Construction: Robust steel housing with a sealed gas cylinder; engineered to withstand repeated cycles without leakage or loss of pressure.
• Installation Type: Front bonnet lift‑strut – replaces the original strut and integrates with existing mounting points, requiring no additional hardware.

Performance Benefits

The Stabilus 218697 Gas Spring offers several advantages over standard mechanical hinges or passive springs:

• Enhanced Safety: The gas‑powered mechanism prevents the bonnet from slamming shut, reducing the risk of injury and protecting delicate engine components.
• Improved Comfort: Users experience a smooth, controlled lift that feels effortless even when the bonnet is fully closed or partially opened.
• Durability: The sealed gas cylinder resists corrosion and maintains consistent pressure over thousands of cycles, extending the life of the bonnet support system.
• Weight Reduction: Compared to heavy mechanical counterweights, the gas spring adds minimal mass, contributing to overall vehicle efficiency.

Installation Overview

Installing the Stabilus 218697 Gas Spring is a straightforward process that can be completed by an experienced automotive technician or a knowledgeable DIY enthusiast. The following steps outline the typical procedure:

1. Remove the Existing Strut: Detach the original bonnet lift‑strut by loosening the mounting bolts and carefully lowering the bonnet to relieve pressure.
2. Prepare the New Gas Spring: Verify that the new strut matches the OEM length (311 mm) and force rating. Inspect for any manufacturing defects before installation.
3. Mount the Strut: Align the mounting points on the bonnet frame with those on the vehicle chassis. Secure the bolts, ensuring a tight fit without over‑tightening, which could damage threads.
4. Test Operation: Raise and lower the bonnet several times to confirm smooth movement, proper alignment, and that the gas spring maintains its pressure throughout the range of motion.
5. Final Checks: Inspect for any leaks or abnormal noises. Verify that the bonnet remains stable when fully closed and that it can be opened without excessive force.

Maintenance Tips

While the Stabilus 218697 Gas Spring is designed for long‑term reliability, periodic checks help ensure optimal performance:

• Visual Inspection: Look for dents, cracks, or corrosion on the housing and mounting points.
• Operational Test: Open and close the bonnet at least once a week to detect any changes in smoothness or resistance.
• Seal Integrity: If you notice any gas leakage (a faint hissing sound), replace the strut immediately, as compromised pressure can affect safety.

Why Choose Stabilus?

The Stabilus 218697 Gas Spring is manufactured by a reputable supplier known for precision engineering and adherence to OEM standards. Its design aligns with BMW’s stringent quality requirements, making it an ideal replacement or upgrade for:

• OEM Replacement: When the original strut fails or loses pressure.
• Performance Enhancement: For owners seeking a smoother bonnet operation and improved safety features.
• Aftermarket Compatibility: Works seamlessly with both BMW and ALPINA models, providing versatility across a range of vehicles.

Conclusion

The Stabilus 218697 Gas Spring – Bonnet delivers reliable, safe, and comfortable bonnet support for BMW and ALPINA cars. With its precise force rating, durable construction, and ease of installation, it stands out as a top choice for vehicle owners who value performance and longevity in their automotive components.