The BTR5781 is a bucket seal belt for the rear centre lap seat belt assembly, specifically the long-end configuration used in Land Rover Defender vehicles. It forms part of the passive restraint system at the rear centre seating position, ensuring the lap belt retains correct tension, alignment, and buckle engagement. A worn or damaged seal belt can compromise buckle function and belt geometry, reducing occupant restraint effectiveness in the event of a collision. Key Features Long-end rear centre lap belt configuration, designed for the specific geometry of the Defender's rear seating arrangement Direct OEM-specification replacement for part number BTR5781 Applies to vehicles from chassis number KA924693 onwards - verify your chassis prefix before ordering When replacing, inspect the associated buckle assembly, anchorage points, and retractor mechanism for wear or corrosion Vehicle Fitment Fits Land Rover Defender (1986–2006), rear centre lap seat belt assembly (long end), applicable from chassis number KA924693 onwards. Not sure about fitment? Feel free to get in touch at [email protected]