Cylinder Head Valve Spring Retainer - Upper For Porsche 996 (1999-2004) 997 (2005-2008), Boxster 987 (2005-2008), Cayman 987 (2006-2008) Models.

Precision-engineered valve spring retainer designed for Porsche 996, 997, Boxster 987, and Cayman 987 models. This critical cylinder head component maintains proper valve spring tension and alignment, ensuring optimal engine performance and reliability. OEM-quality construction withstands high RPM operation and thermal stress. Direct fit replacement for factory specifications. Essential maintenance part for serious Porsche enthusiasts and professional mechanics.