Stabilus 4B-7631LY

Stabilus 4B-7631LY Gas Spring Overview

The Stabilus 4B-7631LY gas spring is an OE-style lift support built for specific Audi applications, including the A8, A8 Quattro, and S8. It uses plastic socket connections and a 70 lb force rating to provide controlled opening and closing action for supported panels.

With an extended length of 403.5 mm (15.886 in) and a compressed length of 242.5 mm (9.547 in), this Stabilus gas strut is sized for direct replacement use where the original support has weakened or lost pressure. The 8 mm rod and 19 mm tube dimensions help match the original fit and function.

Key Features

• Brand: Stabilus
• Part number: 4B-7631LY
• Force rating: 310 N / 70 lb
• Extended length: 403.5 mm (15.886 in)
• Compressed length: 242.5 mm (9.547 in)
• Rod diameter: 8 mm (0.315 in)
• Tube diameter: 19 mm (0.748 in)
• Plastic socket rod and tube connections
• OE-style replacement for select Audi A8, A8 Quattro, and S8 applications

Detailed Description

Stabilus 4B-7631LY is a gas-charged lift support engineered for vehicles that rely on controlled panel movement rather than mechanical hinges alone. It is listed for 1997-2003 Audi A8 Quattro, 2001-2003 Audi S8, and 1997-2000 Audi A8. This part cross-references Dorman - Conduct-Tite 86431 for the same application.

For buyers searching for an Audi A8 Quattro lift support, Audi S8 gas strut, or 1997-2000 Audi A8 hood/trunk support replacement, this part number provides the key dimensional and connection details needed to match the original unit. The plastic socket ends and specified force rating are important for proper panel balance and consistent operation.

Common Problems This Part Can Address

• Weak or failing lift support that no longer holds the panel open
• Slow, uneven, or uncontrolled opening and closing motion
• Panel drop after release due to lost gas pressure
• Original support wear at the socket connection points
• Need for a direct replacement gas spring on select Audi A8, A8 Quattro, and S8 models

Installation Notes and Tips

Verify the compressed length, extended length, rod diameter, tube diameter, and socket style against the original support before installation. Confirm the vehicle application by year and model: Fits 1997-2003 Audi A8 Quattro, N/A; Fits 2001-2003 Audi S8, N/A; Fits 1997-2000 Audi A8, N/A. Match the original mounting orientation and inspect the attachment points for wear before installing the replacement.

Quality Assurance

Stabilus is a recognized OE supplier for gas springs and lift supports, and this part is built to the listed dimensional and force specifications for the confirmed Audi applications.