Valley Cover 12697806 Fits 2014 -2018 L83,L86

12697806 refers to a Valve Lifter Oil Manifold, a part of the General Motors (GM) engine system. Specifically, it directs pressurized engine oil to active fuel management intake and exhaust valve lifters, controlling cylinder deactivation. This helps to optimize fuel economy by allowing the engine to run on fewer cylinders when full power isn't needed