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Stabilus 4B-442407 Deck Lid Lift SupportOE Quality 60-Day Returns
Part #: 4B-442407

Stabilus 4B-442407 Deck Lid Lift Support

33 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: BMW, 430i, 430i xDrive, 440i, 440i xDrive, M4, 428i, 428i xDrive, 435i, and 435i xDrive
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Not what you need? See all Deck Lid Lift Support options

OE-Style Gas Strut for BMW Coupe and Gran Coupe Trunks

This Stabilus gas spring is built for BMW trunk and lift support applications that require controlled opening and steady hold position. With a 300 N (67 lb) force rating, 20.472 in extended length, and 12.244 in compressed length, it matches the dimensions needed for select BMW 4 Series and M4 applications.

Key Features

  • Brand: Stabilus
  • Part number: 4B-442407
  • Force rating: 300 N / 67 lb
  • Extended length: 20.472 in (520 mm)
  • Compressed length: 12.244 in (311 mm)
  • Rod diameter: 0.315 in (8 mm)
  • Tube diameter: 0.709 in (18 mm)
  • Plastic socket rod and tube connections
  • Rod end and tube end attachment diameter: 0.394 in (10 mm)

Product Details

The Stabilus 4B-442407 gas strut is an OE-style support component for rear lift applications on select BMW models. It uses plastic socket connections at both ends and is sized for direct replacement where the original support matches the listed dimensions and force output. This part cross-references BMW numbers 51 24 7 295 244 and 81 084 37 for the same application. Common fitment includes Fits 2017-2020 BMW 430i, N/A; Fits 2017-2020 BMW 430i xDrive, N/A; Fits 2017-2020 BMW 440i, N/A; Fits 2017-2020 BMW 440i xDrive, N/A; Fits 2015-2020 BMW M4, N/A; Fits 2014-2016 BMW 428i, N/A; Fits 2014-2016 BMW 428i xDrive, N/A; Fits 2014-2016 BMW 435i, N/A; Fits 2015-2016 BMW 435i xDrive, N/A. The Stabilus 4B-442407 is a direct-fit option for BMW 430i, 440i, 428i, 435i, and M4 trunk support service when the original part number or dimensions match.

What It Helps Solve

  • Weak or failing trunk lift support
  • Hatch or deck lid that drops too quickly
  • Loss of consistent opening force
  • Support rod that no longer holds the panel in place
  • Noisy or worn gas strut operation

Installation Notes and Tips

Verify the original part number, extended length, compressed length, rod diameter, and end connection style before installation. Compare the existing support to the 4B-442407 to confirm the plastic socket attachment and 10 mm end dimensions match your vehicle. For best results, replace supports in matched pairs when both sides show similar wear, and support the liftgate or trunk lid securely during service.

Quality Assurance

Stabilus is a recognized OE supplier of gas springs and lift supports, and this part is built to OE-style specifications for fit and function on the listed BMW applications.

BrandStabilus
Part Number4B-442407
Y
Y
Body0.709
Compressed Length12.244
Compressed Length311
Extended Length20.472
Extended Length520
Force (N)300
Force Lbs67
Hardware KitNO
Rod ConnectionPLASTIC SOCKET
Rod Dia (IN)0.315
Rod Diameter8
Rod End Attachment Dia (IN)0.394
Rod End Attachment Dia (MM)10
Shaft0.315
Shaft ConnectionPLASTIC SOCKET
Tube ConnectionPLASTIC SOCKET
Tube Dia (IN)0.709
Tube Diameter18
Tube End Attach Dia (IN)0.394
Tube End Attach Dia (mm)10

This part fits 33 vehicles. Search below:

YearMakeModelBody TypePositionNotes
2020BMW430iConvertibleN/A
2020BMW430i xDriveConvertibleN/A
2020BMW440iConvertibleN/A
2020BMW440i xDriveConvertibleN/A
2020BMWM4ConvertibleN/A
2019BMW430iConvertibleN/A
2019BMW430i xDriveConvertibleN/A
2019BMW440iConvertibleN/A
2019BMW440i xDriveConvertibleN/A
2019BMWM4ConvertibleN/A
2018BMW430iConvertibleN/A
2018BMW430i xDriveConvertibleN/A
2018BMW440iConvertibleN/A
2018BMW440i xDriveConvertibleN/A
2018BMWM4ConvertibleN/A
2017BMW430iConvertibleN/A
2017BMW430i xDriveConvertibleN/A
2017BMW440iConvertibleN/A
2017BMW440i xDriveConvertibleN/A
2017BMWM4ConvertibleN/A
2016BMW428iConvertibleN/A
2016BMW428i xDriveConvertibleN/A
2016BMW435iConvertibleN/A
2016BMW435i xDriveConvertibleN/A
2016BMWM4ConvertibleN/A
2015BMW428iConvertibleN/A
2015BMW428i xDriveConvertibleN/A
2015BMW435iConvertibleN/A
2015BMW435i xDriveConvertibleN/A
2015BMWM4ConvertibleN/A
2014BMW428iConvertibleN/A
2014BMW428i xDriveConvertibleN/A
2014BMW435iConvertibleN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.