... :200,000 kilometers.2. Main products: Enigne valve,valve guide,valve seat3.Material: We use High Phosphor Cast Iron Alloy ... to be our Valve Guide MateriaL.High attrition endurance, High temperature endurance,High erosion ... Quality Control System, passed TS16949 Quality Management System Certification Valve Guide For TOYOTA J,2J,JK-170/OE:11122-46010,11126-46010