Subaru WRX 2015–2018 — technical service bulletin
Bulletin 03-79-18R · NHTSA communication 10150921 · issued Oct 22, 2018
Technical service bulletin
communication type
Equipment
component
2015–2018
model years
4
vehicle entries
Official summary
This bulletin announces a change to the clutch system components optimizing their durability and resistance to certain severe driving conditions including high-temperature operation.
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.