HARDENED VALVE LASH CAPSHardened valve lash caps prevent the valve stem tip from mushrooming under the load of heavyvalve spring pressure. These hardened steel caps extend valve life by improving rocker arm to stem contact. Recommended for all stainless steel oversize valves to prevent valve stem mushrooming which can occur under extreme use. Sold as set of 8 Compatible with Volkswagen Engine: 1200-1600cc VW Material: Hardened Steel Quantity: 8 Pieces4006 Hardened Valve Lash Caps, Set of 8