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Service bulletin 8363

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 id10002440
Published by NHTSA2003-08-29
Manufacturer's number8363
Manufacturer's date2003-05-05
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE COOLANT CONDITIONER LINES ON CERTAIN C-10 AND C-12 TRUCK ENGINES. *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
CATERPILLAR CATERPILLAR

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