A serviceable seatbelt integrated airbag assembly that is removably attached to a vehicle seat includes an integrated deployable cushion, an inflation device, and a lap belt portion. A bracket may be provided that is removably attached to the seat. The lap belt portion is generally removably attached to the seat structure through connection with a bracket or structural member of the seat assembly and secured by a removable fastener. The airbag cushion is attached to, or contained within, a portion of the lap belt portion seatbelt webbing. An end of the lap belt portion fits through an interfacing joint element attached to one end of the primary seatbelt webbing. The airbag inflation device is connected to the electrical system of the vehicle. Removal of the serviceable seatbelt integrated airbag assembly is accomplished by disconnecting the electrical connector from the electrical system of the vehicle and seatbelt integrated airbag lap belt portion. The removable fastener is removed to disengage the lap belt portion from connection with the seat assembly and the lap belt portion is then released from connection with the primary seatbelt assembly by feeding an end of the lap belt portion through the interfacing joint element Attachment of the serviceable assembly is accomplished by reversing the described steps. Removal of the remaining portion of the seatbelt system, including the retractor and upper seatbelt guide may be achieved after decoupling the seatbelt integrated airbag lap belt portion from the seat structure and primary seatbelt system.