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Service bulletin 110603

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10004620
Published by NHTSA2003-12-29
Manufacturer's number110603
Manufacturer's date2003-11-06
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

POSSIBLE DEFECT IN SOME OF THE WRX PERFORMANCE EXHAUST SYSTEMS OF MIS-ALIGNED AND/OR INCONSISTENT WELDING OF THE INLET FLANGE OF THE CONNECTING PIPE WHERE THE ASSEMBLY CONNECTS TO THE CATALYTIC CONVERTER. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Exhaust and emissions

Vehicles listed
SUBARU SUBARU

Listing a model year does not mean every vehicle of it is concerned: the document says which.