Transfer Case Selector Shaft Sensor, Detent Plug O-ring, 261XHD / 263XHD.
Replacement seal for the Selector Shaft Sensor located in the top of the front half.
For 2001, 2002, 2003, 2004, 2005, 2006, 2007 GM 6.6L Duramax LB7 LLY LBZ
Replacement seal for the Selector Shaft Sensor located in the top of the front half of 261XHD and 263XHD transfer cases. It also fits the Detent Plug located in the bottom of the front half of the same transfer case models.