LLY Breather Repair Kit
Specifically designed for the 2004.5 to 2005 LLY Duramax. This upgrade kit replaces the factory plastic valve cover breather system with CNC machined billet aluminum valve cover adapter fittings and oil compatible 5/8” tubing. Sold as a complete kit.
GM Equivalent P/N: 973570331
Application: 2004.5-2005 GM 6.6L Duramax