NP149, NP246, NP261 & NP263 t-case Seal Front Output, Premium . NP149, NP246, NP261 & NP263 Transfer Case Front Output Seal OEM Features and Benefits: NP149, NP246, NP261 & NP263 Transfer Case Front Output Seal OEM Details: AAP UDA 4: 50 Application Summary: 2006 Cadillac Escalade Esv (Front) 2002-2006 Cadillac Escalade Ext (Front) 2000-2006 Cadillac Escalade (Front) (Drive: 4WD, AWD) 2007 Chevrolet Silverado 1500 Classic (Front) (Drive: 4WD) 2007 Chevrolet Silverado 2500 Hd Classic (Front) (Drive: 4WD) 2007 Chevrolet Silverado 3500 Classic (Front) (Drive: 4WD) 2007 Chevrolet Silverado 1500 Hd Classic (Front) (Drive: 4WD) 2007 Chevrolet Avalanche (Front) (Drive: 4WD) 2002-2006 Chevrolet Avalanche 1500 (Front) (Drive: 4WD) 2003-2006 Chevrolet Avalanche 2500 (Front) (Drive: 4WD) 1998-1999 Chevrolet K1500 Suburban (Front) 1998-1999 Chevrolet K2500 Suburban (Front) 1999-2006 Chevrolet Silverado 1500 (Front) (Drive: 4WD, AWD) 2001-2006 Chevrolet Silverado 1500 Hd (Front) (Drive: 4WD) 1999-2004 Chevrolet Silverado 2500 (Front) (Drive: 4WD) 2001-2006 Chevrolet Silverado 2500 Hd (Front) (Drive: 4WD) 2001-2006 Chevrolet Silverado 3500 (Front) (Drive: 4WD) 2000-2007 Chevrolet Suburban 1500 (Front) (Drive: 4WD, AWD) 2000-2007 Chevrolet Suburban 2500 (Front) (Drive: 4WD) 1998-2007 Chevrolet Tahoe (Front) (Drive: 4WD) 2007 GMC Sierra 1500 Classic (Front) (Drive: 4WD, AWD) 2007 GMC Sierra 2500 Hd Classic (Front) (Drive: 4WD) 2007 GMC Sierra 3500 Classic (Front) (Drive: 4WD) 2007 GMC Sierra 1500 Hd Classic (Front) (Drive: 4WD) 1998-1999 GMC K1500 Suburban (Front) 1998-1999 GMC K2500 Suburban (Front) 1999-2006 GMC Sierra 1500 (Front) (Drive: 4WD, AWD) 2001-2006 GMC Sierra 1500 Hd (Front) (Drive: 4WD) 1999-2004 GMC Sierra 2500 (Front) (Drive: 4WD) 2001-2006 GMC Sierra 2500 Hd (Front) (Drive: 4WD) 2001-2006 GMC Sierra 3500 (Front) (Drive: 4WD) 1998-2007 GMC Yukon (Front) (Drive: 4WD, AWD) 2000-2007 GMC Yukon Xl 1500 (Front) (Drive: 4WD, AWD) 2000-2007 GMC Yukon Xl 2500 (Front) (Drive: 4WD)