Ford part number YR3Z-63611D70-AA for the Mustang. It is a kit with Teflon tape to improve the retraction speed of the seat belt. Common problem with many Fords. However, check the build date of your car. This TSB may not apply. Good luck.
>>Excerpts from TSB 05-16-11 dated 08/22/05
SAFETY BELT RETRACTION SPEED
FORD:
2000-2003 Mustang
2000-2006 Crown Victoria, Taurus
2000-2003 Explorer Sport, Windstar
2000-2005 Excursion, Explorer
2000-2006 E-Series, Expedition, F-150,
F-Super Duty, Ranger
2001-2005 Explorer Sport Trac
2001-2006 Escape
2004-2006 Freestar
2005-2006 Escape Hybrid
2004-2006 F-650, F-750
LINCOLN:
2000-2002 Continental
2000-2006 LS, Town Car, Navigator
2003-2005 Aviator
MERCURY:
2000-2005 Sable
2000-2006 Grand Marquis
2000-2005 Mountaineer
2004-2006 Monterey
2005-2006 Mariner
^ MUSTANG: Only install on vehicles built through 6/15/2003. Teflon tape was already installed on vehicles built on/after 6/16/2003.
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