Stabilus 4B-012158 Hatch Lift Support

BMW X1 Gas Strut Replacement

This Stabilus gas strut, part number 4B-012158, is an OE-style lift support built for controlled opening and closing action. It is compatible with 2010-2015 BMW X1 applications and uses plastic socket connections for a direct-fit style replacement.

Key Features

• Brand: Stabilus
• Part number: 4B-012158
• Force rating: 460 N / 103 lb
• Extended length: 22.402 in (569 mm)
• Compressed length: 13.110 in (333 mm)
• Rod diameter: 0.315 in (8 mm)
• Tube diameter: 0.709 in (18 mm)
• Plastic socket rod and tube connections
• Direct replacement for 2010-2015 BMW X1

Detailed Description

The Stabilus 4B-012158 gas spring is specified with a 460 N force rating, 22.402-inch extended length, and 13.110-inch compressed length to match the lift support geometry used on select BMW X1 models. The plastic socket attachment style on both ends supports a straightforward OE-type replacement for the 2010-2015 BMW X1. This part cross-references URO 51242990136 for the same application.

Common Problems This Part Helps Address

• Liftgate or hatch that drops too quickly
• Weak support when opening the rear access panel
• Uneven or inconsistent opening effort
• Loss of holding force in worn gas struts
• Difficulty keeping the panel open during loading or service

Installation Notes and Tips

Verify the existing strut length, end fittings, and mounting orientation before installation. Compare the old support to the 4B-012158 to confirm the plastic socket connections and overall dimensions match the vehicle application. Replace one side at a time if the vehicle uses paired supports, and support the liftgate or panel securely before removing the old strut.

Quality Assurance

Stabilus is a recognized OE supplier of gas springs and lift supports, and this part is built to the listed force and dimensional specifications for the BMW X1 application.