High Performance Valve Spring and 9mm Titanium Retainer Set For Porsche 911 914 930 964 965 (ENG 901 105 901 HP PMS)
Upgraded HP Valve Springs. HP Seats. and HP 9mm Titanium Retainer Set For High Performance Lightweight Valve Control - 1965-1994 Porsche 911 / 914-6 / 930 / 964 / 965 / Turbo - Ideal For All Street / Sport / Racing Engines - Patrick Motorsports USA - Sold As A Set(12) - 1 Set Per Engine - NOTE: NOT COMPATIBLE WITH O.E. Valve Springs or O.E. Valve Seats.
This Set Includes: (QTY 12) High Performance Valve Spring Sets (Inner & Outer Springs) + (QTY 12) HP 9mm Titanium Spring Retainers + (Qty 12) HP Valve Spring Seats
Alternate Part Numbers: ENG 901 105 901 HP PMS / ENG-901-105-901-HP-PMS / 901.105.901.HP / 901105901HP / RS VALVE SPRING / RSR VALVE SPRING
01/16/2026