Subaru Ascent 2019–2024 — technical service bulletin
Bulletin 09-130-25R · NHTSA communication 11034243 · issued Jun 3, 2026
Technical service bulletin
communication type
Engine
component
2019–2024
model years
11
vehicle entries
Official summary
This bulletin announces the design change made to the exhaust manifold flange nut material that has been changed from stainless steel to medium carbon steel. This change also necessitates a revised tightening torque specification. (This is an revised version of the original bulletin.)
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.