Lesjöfors 8108434 Bonnet

Lesjöfors 8108434 Bonnet

The Lesjöfors 8108434 Bonnet is a high‑performance component designed for the rear cargo area of BMW 3‑Series Touring models, particularly those produced between 2015 and 2020. It functions as a gas spring (boot gas strut), providing smooth lift and secure closure of the tailgate while reducing strain on the vehicle’s chassis.

Key Functional Characteristics

• Load Capacity: Engineered to support the weight of a fully loaded rear cargo area, ensuring effortless opening and closing even when the boot is full.
• Spring Type: Gas‑filled hydraulic spring that delivers consistent force throughout its travel, preventing sudden drops or excessive resistance.
Travel Length: Approximately 140–160 mm of vertical movement, matching the design specifications of BMW Touring models.
• Installation Compatibility: Direct fit for the rear tailgate assembly on BMW 3‑Series Touring (F31) vehicles equipped with a 2.0‑liter engine from 2015 to 2020, as well as earlier model years where the same tailgate geometry applies.

Material and Construction Quality

The bonnet is constructed from high‑strength alloy steel, treated with a corrosion‑resistant coating that withstands exposure to road salts, moisture, and temperature extremes. The internal gas chamber is sealed with precision engineering to prevent leaks, ensuring long‑term reliability.

Installation Overview

Replacing the original OEM gas spring with the Lesjöfors 8108434 Bonnet involves a straightforward procedure:

1. Secure the vehicle on a lift or jack stands to access the rear tailgate.
2. Remove the existing gas spring by loosening the mounting bolts and carefully detaching the spring from its attachment points.
3. Position the new Lesjöfors 8108434 Bonnet, aligning it with the tailgate’s mounting brackets.
4. Tighten all fasteners to the manufacturer’s torque specifications, typically around 20 Nm for the main bolts.
5. Test the tailgate operation by opening and closing several times to confirm smooth lift and proper tension.

Performance Benefits

• Reduced Mechanical Stress: By absorbing the load, the gas spring lessens wear on the tailgate hinges and surrounding chassis components.
• Consistent Lift Force: The gas‑filled design provides a steady lift throughout the entire travel range, eliminating the “heavy” feel often experienced with older or worn springs.
• Enhanced Safety: A properly functioning gas spring prevents accidental tailgate opening while driving, safeguarding passengers and cargo.

Compatibility Summary

The Lesjöfors 8108434 Bonnet is specifically tailored for the following BMW models:

• BMW 320d Touring (2.0 L) – 2015‑2020
• BMW 330d Touring (3.0 L) – 2015‑2020
• BMW 318i Touring (1.6 L) – 2015‑2020
• BMW 325d Touring (2.0 L) – 2015‑2020
• BMW 330i Touring (2.0 L) – 2015‑2020
• Earlier model years with the same tailgate geometry, such as 2013‑2014 Touring variants.

For each of these models, the bonnet matches the OEM part number 414034, ensuring a seamless fit and identical performance characteristics.

Maintenance Tips

• Inspect the gas spring periodically for signs of wear or leakage; a small drop in lift force may indicate internal damage.
• Avoid overloading the cargo area beyond the recommended capacity, as excessive weight can accelerate wear on the spring.
• If the tailgate feels sluggish or sticks, clean the mounting surfaces and re‑torque bolts to maintain optimal operation.

Why Choose Lesjöfors?

Lesjöfors is renowned for producing high‑quality automotive components that meet or exceed OEM specifications. The 8108434 Bonnet reflects this commitment through:

• Precision engineering and rigorous quality control.
• Use of durable materials designed to resist corrosion and fatigue.
• Compatibility with a wide range of BMW Touring models, ensuring that owners can upgrade or replace their gas springs without compromising vehicle integrity.

Conclusion

The Lesjöfors 8108434 Bonnet delivers reliable, smooth operation for the rear cargo area of BMW 3‑Series Touring vehicles. Its robust construction, precise fitment, and consistent performance make it an excellent choice for owners seeking to maintain or enhance their vehicle’s tailgate functionality.