Valve Stem Seals GM Series
The valve stem seals are easily and securely fixed in the engine by the valve spring. The seal and valve spring seat are combined into a single component. For valve stem seals, WEIANN / MATTO offers the entire line from single valve stem seals, designed of materials, to integrate valve stem seals.
GM Valve Stem Seals Engine Name : 138 189 3.1 3.8 and more.