Subaru Ascent 2019–2024 — technical service bulletin
Bulletin 09-130-25R · NHTSA communication 11014858 · issued Feb 18, 2025
Technical service bulletin
communication type
Engine
component
2019–2024
model years
16
vehicle entries
Official summary
This bulletin announces the design change made to the exhaust manifold flange nuts. The material has been changed from a medium carbon steel to stainless steel.
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.