Volvo 850 1998 — technical service bulletin
Bulletin 280001 · NHTSA communication 601976 · issued Sep 1, 1998
Technical service bulletin
communication type
Electrical System
component
1998
model years
3
vehicle entries
Official summary
A new spark plug with improved specifications, introduced into production during october 1997 for all 5 cylinder naturally aspirated engines.. *yc
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.