94011605 OE Heater Pipe Seal, 2001-2007 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