Aside from liability, the older bag compmnents degrade with time.
http://www.peachparts.com/shopforum/showthread.php?t=59485&highlight=air+bag
I kept the old bag, replaced the seat belts, which also degrade with time, and are more important than airbags as far as restraint goes, IMHO.
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John
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E