Honda Passport 1994–2002 — technical service bulletin
Bulletin 402 · NHTSA communication 637953 · issued Apr 16, 2002
Technical service bulletin
communication type
Engine and Engine Cooling
component
1994–2002
model years
9
vehicle entries
Official summary
Subject regarding replacement top piston ring marking. *tt
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.