126 589 00 90 00 Ignition unit - WS91.00-P-0005B

FG 91/Set B 

MODEL all 

Use/specification: 

Ignition unit for airbag and seat belt tensioner

Fig 1: Identifying Ignition Unit For Airbag And Seat Belt Tensioner

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Ignition Unit (126 589 00 90 00)

Courtesy of MERCEDES-BENZ USA