StrongArm 4546 Trunk Lid Lift Support

StrongArm Trunk Lid Lift Support for BMW 740i, 740iL, 750iL

The StrongArm 4546 trunk lid lift support is engineered specifically for BMW 740i, 740iL, and 750iL models. Designed to provide reliable and consistent support, this lift support ensures smooth trunk lid operation and secure positioning.

• Compressed length: 8.36 inches
• Extended length: 11.8 inches
• Cylinder outside diameter: 19.0 mm
• Stroke length: 3.44 inches
• Inner shaft diameter: 10.0 mm
• Outer cylinder made of durable black steel
• Ball socket (nylon) 10mm on one end, threaded 8mm on the other
• Materials include rubber and Teflon components for smooth movement
• Maximum force rating of 142.0 N
• Specific fitment for BMW 740i, 740iL, and 750iL

Product Details and Specifications

The StrongArm 4546 trunk lid lift support is a precision-engineered component designed to replace worn or failing lift supports on select BMW models. Its steel outer cylinder is finished in black for corrosion resistance and durability. The lift support features a 19.0 mm diameter cylinder and a 10.0 mm inner shaft diameter, providing the necessary strength and stability for trunk lid operation. The 3.44-inch stroke length allows for smooth opening and closing motions, while the 142 N maximum force rating ensures adequate support for the trunk lid weight. The ball socket end with nylon material and threaded end provide secure mounting points that match OEM specifications.

Common Applications and Problem Solving

• Replaces weak or broken trunk lid lift supports on BMW 740i, 740iL, and 750iL
• Eliminates trunk lid sagging or failure to stay open
• Restores smooth and controlled trunk lid movement
• Prevents sudden trunk lid closure that can cause injury or damage
• Improves overall trunk compartment usability and safety

Installation Notes and Tips

Installation of the StrongArm 4546 lift support requires basic hand tools. Ensure the vehicle is parked on a level surface and the trunk lid is securely supported during replacement. Remove the old lift support by detaching the ball socket and threaded ends carefully. Align the new lift support with the mounting points, securing the ball socket end first, followed by the threaded end. Verify smooth operation and proper support before completing installation.

Quality Assurance and Warranty

StrongArm trunk lid lift supports are manufactured to meet or exceed OEM standards for fit, form, and function. The 4546 part number undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, StrongArm products typically include a limited warranty against defects in materials and workmanship. Consult product documentation for exact warranty terms.