94011605 OE Heater Pipe Seal.
Don’t take a chance, replace the seal if in question.
For 2001, 2002, 2003, 2004, 2005, 2006, 2007 GM 6.6L Duramax LB7 LLY LBZ
Seal can swell when contaminated and not seal well upon reinstall. Also, swollen seals can be tough to get back in place with out rolling out and ripping. Don’t take a chance, replace the seal if in question
2500HD 3500 3500 Silverado Sierra 6.6L V8 Duramax diesel:2001, 2002, 2003, 2004, 2005, 2006, 2007
2500 3500 LLY Van Express Savana 6.6L V8 Duramax diesel:2006, 2007