1、 原厂替换,更换32个气门座杯和四根原厂凸轮轴总成。 2、升级替换,更换C63的Black series版本的锻造凸轮轴和气门座杯,“这个方案是一位车友提供的” 通过M156 SLS BLACK SERIES加强配件的形式进行更换,官方的资料是这样描述的。 NEW OEM AMG M156 SLS BLACK SERIES VALVE LIFTER SET OF 32. Brand new from Mercedes-AMG. Includes 32 pieces. Direct fit drop in upgrade for all m156 6.3 engines. All pieces will be sealed in original packaging. No returns on internal engine parts.