Description
A Bostech Valve Cover Bolt Insulator for the 2004-2006 GM 6.6L Duramax LLY. A cast replacement pan or cover with added fluid capacity.
- Bostech part number DEC011638
Fits: 2004-2006 GM 6.6L Duramax LLY; 2006-2007 GM 6.6L Duramax LBZ; 2007-2010 GM 6.6L Duramax LMM; 2011-2016 GM 6.6L Duramax LML
