Lesjöfors 8108432 Bonnet

Lesjöfors 8108432 Bonnet – Precision Engineering for the BMW 1‑Series

The Lesjöfors 8108432 Bonnet is a high‑performance gas spring designed specifically for the rear cargo area of the BMW 1‑Series (F20/F21). It delivers smooth, controlled lift and return action, ensuring that the tailgate operates effortlessly even when fully loaded. This component is engineered to meet or exceed OEM specifications, providing reliability and durability in every use.

Key Features

• Exact Fitment: Tailored for BMW 1‑Series models from 2007 to present, including F20 (2010–2019) and F21 (2013–2020).
• High‑Quality Construction: Made from premium alloy steel with a corrosion‑resistant coating, guaranteeing long service life.
• Consistent Performance: Maintains uniform lift force across the full travel range, preventing sudden jerks or uneven weight distribution.
• Easy Installation: Designed for quick mounting without the need for special tools; compatible with existing mounting brackets.
• Low Maintenance: Requires no lubrication and is resistant to environmental factors such as dust, moisture, and temperature extremes.

Technical Specifications

Compatibility Overview

The Lesjöfors 8108432 Bonnet is engineered to fit a wide range of BMW 1‑Series vehicles. Below is a concise compatibility matrix for quick reference:

For specific engine variants such as the B48B20A, B37D15A, N13B16A, or N47D16A, the 8108432 spring provides optimal lift characteristics that match OEM performance.

Installation Guide

1. Preparation: Ensure the vehicle is parked on a level surface and the tailgate is fully closed. Disconnect any electrical components if necessary.
2. Remove Old Spring: Loosen the mounting bolts that secure the existing gas spring. Carefully detach the old unit, noting its orientation for reference.
3. Mount New Bonnet: Align the 8108432 spring with the mounting brackets. Secure it using the supplied bolts and torque specifications (typically 12–15 Nm).
4. Test Operation: Open and close the tailgate several times to confirm smooth movement and proper return force.
5. Final Check: Inspect all fasteners for tightness and verify that no debris has entered the spring mechanism.

Benefits of Choosing Lesjöfors 8108432 Bonnet

• Enhanced Safety: Reliable lift action reduces the risk of tailgate slamming or uncontrolled movement.
• Improved Comfort: Users experience a quiet, effortless opening and closing cycle.
• Longevity: The robust construction resists wear, extending the service life beyond typical aftermarket alternatives.
• Consistent Load Handling: Whether carrying light luggage or heavy cargo, the spring maintains consistent performance.

Maintenance Tips

Although the Lesjöfors 8108432 Bonnet is low‑maintenance, periodic checks can ensure peak performance:

• Visual Inspection: Look for signs of corrosion or damage on the spring housing and mounting points.
• Check Fasteners: Tighten bolts every 12 months or after heavy use to prevent loosening.
• Clean Surroundings: Remove dirt or debris from the tailgate area to avoid interference with the spring’s movement.

Frequently Asked Questions

Is this product compatible with all BMW 1‑Series models?

No. It is specifically designed for F20 and F21 series vehicles. Always verify your model year and engine type before purchase.

Can I install the spring myself?

Yes, the installation process is straightforward and can be completed by a competent DIY enthusiast with basic tools.

What if my tailgate still feels stiff after installing the 8108432 Bonnet?

Check that the spring is correctly oriented and fully seated in its mounting brackets. If issues persist, consult a professional technician.

Does this component require lubrication?

No. The gas spring’s sealed design eliminates the need for external lubricants.

Conclusion

The Lesjöfors 8108432 Bonnet stands out as a premium, reliable solution for BMW 1‑Series tailgate lift systems. Its precise engineering, durable construction, and ease of installation make it an excellent choice for vehicle owners seeking to maintain or enhance their car’s performance and safety.