Valve Spring Retainer - Lower - 911 | Boxster | Cayman | 1999-2008 911-100-956-01 Lifting Capacity: 60

Lifting Capacity: 60

providing ample headroom for future modifications

Performance Enhancement: Increases horsepower by 26 whp and torque by 29 ft-lbs

300TD (1985-1987)

Maximum Lift Capacity: 8

Valve Spring Retainer - Lower - 911 | Boxster | Cayman | 1999-2008 911-100-956-01 Lifting Capacity: 60Cylinder Head Valve Spring Retainer Lower For Porsche 996 (1999 2004) 997 (2005 2008), Boxster 987 (2005 2008), Cayman 987 (2006 2008) Models. Precision engineered lower valve spring retainer designed for Porsche 996, 997, Boxster 987, and Cayman 987 models. This critical engine component maintains proper valve spring tension and alignment, ensuring optimal valve operation and engine performance. OEM quality construction built to withstand high RPM