1997-2000 BMW 5 Series Rear Seat Belt

Also known as

Seat Belt Assembly

Safety Belt

Seat Belt Retractor

Seatbelt Reel

Restraint System

What this part does

The Seat Belt assembly is the primary passive restraint system in the vehicle, designed to secure the occupant against the seat during sudden deceleration, evasive maneuvers, or a collision. It houses the woven nylon webbing, a coiled retraction spring, and a motion-sensitive inertia locking mechanism. The internal reel permits freedom of movement under normal driving conditions but locks the webbing instantly when subjected to sudden g-forces or rapid pulling.

In the E39 chassis, the retractor is securely bolted directly to the structural steel behind the interior trim panels. When the retractor spring loses tension over time, the belt will hang loose and fail to retract into the pillar, which can cause the belt to get caught in the door latch. A failed locking mechanism, damaged retractor, or frayed webbing severely compromises passenger safety and dictates immediate replacement of the entire assembly.

Fits these vehicles

Before you order

• Seat belt assemblies are strictly position-dependent. A left-side retractor cannot be installed on the right side, and rear belts differ entirely from the front units. Verify the exact position required for your replacement.
• When replacing a seat belt in the E39 5 Series, you must carefully remove the pillar or rear deck trim to access the primary mounting bolts. Disconnect the vehicle battery before working near any restraint systems to prevent accidental SRS system faults.
• This listing is for the retractor and webbing assembly. It does not typically include the separate seat-mounted buckle receptacle unless otherwise specified.
• If your current belt is locked tight and will not pull out, the explosive pretensioner has likely deployed. Deployed belts cannot be reset or repaired and must be completely replaced.