Frankberg 2x bonnet gas struts for 1 Series E87 2003–2012

This pair of bonnet gas struts from Frankberg helps lift and hold the bonnet open on several BMW 1 Series models, simplifying engine access for maintenance and inspections. With a stated extension force of 350 N according to the manufacturer, these struts are intended for left and right mounting and suit hatchback, coupe and cabriolet body styles across the relevant production years.

Key Points

The set includes two gas struts designed to replace the original bonnet supports on compatible BMW 1 Series vehicles. They are sold as left and right units to restore proper opening action and to prevent the bonnet from falling unexpectedly when open. Consider that fitment must be checked against the OEM numbers and the vehicle list before installation to ensure correct match.

Technical Specifications

• Name: Frankberg 2x Gas Struts bonnet
• Compatibility: BMW 1 Series E81 (Hatchback) 2005-2012, E87 (Hatchback) 2003-2012, E88 (Cabriolet) 2008-2013, E82 (Coupe) 2007-2013
• Product numbers: 51237118370, 7118370, 20927586
• Extended length: approx. 374 mm
• Stroke: approx. 140 mm
• Cylinder length: approx. 234 mm
• Cylinder diameter: approx. 18 mm
• Piston rod diameter: approx. 8 mm
• Extension force: 350 N

Benefits

Replacing worn or leaking bonnet struts brings immediate practical benefits. The new Frankberg units recover smooth, controlled opening and holding of the bonnet which reduces the risk of accidental closure while someone is working on the engine. They are relatively compact yet are specified to provide a consistent extension force of 350 N, which should match the original support behaviour on the listed BMW models. Additionally, renewing both sides at once helps maintain balanced support and prevents uneven load on bonnet hinges.

Usage Recommendations

Before fitting, compare the OEM reference numbers and the vehicle compatibility list against your car to verify suitability, since dimensions and mounting positions must match. Installation typically requires removing the old struts from ball joints or brackets and attaching the replacement units in the same orientation. If the original fixing clips or ball connectors are worn, replace them for secure retention. Note that the stated measurements are approximate and are provided by the manufacturer; slight variations can occur.