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October 23, 2026 Service bulletin

This bulletin announces the design change to the Inlet and Outlet Heater Hoses

Subaru technical service bulletin 09-139-26 for 2023 Subaru WRX.

Bulletin number
09-139-26
Component
Engine
Summary
This bulletin announces the design change to the Inlet and Outlet Heater Hoses. The new design changes the layout and eliminates the clamp that secures the hoses together.

Owners of these vehicles have filed 2 complaints in the engine category.

Vehicles covered

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