Empi 4006 Hardened Steel Valve Stem Lash 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. Application: Volkswagen Type 1 Bug 1300-1600cc Base Engines Volkswagen Type 1 Karmann Ghia 1300-1600cc Base Engines Volkswagen Type 2 Bus 1300-1600cc Base Engines Volkswagen Type 3 Squareback, Fastback, Notchback 1300-1600cc Base Engines Sold As Set Of 8