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Service bulletin 18815

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 id10018069
Published by NHTSA2005-12-15
Manufacturer's number18815
Manufacturer's date2005-09-01
NHTSA componentPOWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)

NHTSA's summary

A TINY CRACK, OR CRACKS, AROUND THE TRANSFER CASE DRAIN PLUG HOLE. *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

Transmission and driveline, Transfer case

Vehicles listed
FORD EXPEDITION2003, 2004, 2005
FORD EXPLORER2005
LINCOLN AVIATOR2005
LINCOLN NAVIGATOR2003, 2004, 2005
MERCURY MOUNTAINEER2005

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