This bulletin provides updated parts information and a service procedure to follow for removing...
Subaru technical service bulletin 09-74-21R for 2015-2022 Subaru WRX.
- Bulletin number
- 09-74-21R
- Component
- Engine and engine cooling
- Summary
- This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components.
Owners of these vehicles have filed 84 complaints in the engine category.
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