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Service bulletin 012004

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 id10005651
Published by NHTSA2004-03-10
Manufacturer's number012004
Manufacturer's date2004-01-20
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

EXTERNAL COOLANT LEAK FROM THE CYLINDER HEAD GASKETS AS A RESULT OF NORMAL RELATIVE THERMAL EXPANSION AND CONTRACTION VARIATIONS OF ENGINE PARTS. SPECIAL CONDITIONER SHOULD BE ADDED TO THE ENGINE COOLING SYSTEM TO PREVENT LEAKS FROM OCCURRING OR TO CORRECT EXISTING LEAKS. 1999 THROUGH 202 MODEL YEAR 2.5L EQUIPPED SUBARU VEHICLES. *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

Vehicles listed
UNKNOWN UNKNOWN1

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