993 8mm Valve Stem Titanium Valve Spring Retainer Set For Sport / Race Engines (ENG 911 993 8 TI R)

PATRICK MOTORSPORTS USA Verified independent store

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Install These On Your Next Rebuild For Added Insurance On Your High RPM Engines - They Are Stronger Than Stock And Lighter So You Get An Added Bonus Over Stock. Less Chance Of Dama ge And Valve Float. For 1995-1998 Porsche 993 / 993 Turbo 8mm Valve Stem Titanium Valve Spring Retainer Set For Sport / Race Engines - 3.6L - 3.8L Engine - Patrick Motorsports USA - Sold As A Set Of 12 - 1 Set Per Engine - Replaces Factory Part Numbers: 993 105 421 00 - Concave Washer (Valve Spring Retainer) Note: Requires High Performance Valve Spring Set # 901 105 901 50 HP and High Performance Valve Spring Seat Set Also Sold In A Complete Set With Upgraded HD Springs And Valve Spring Seats # ENG 993 105 901 HP PMS NOTE: NOT COMPATIBLE WITH O.E. VALVE SPRINGS OR O.E. VALVE SPRING SEATS.Alternate Part Numbers: ENG 911 993 8 TI R / ENG-911-993-8-TI-R / 911.993.8.TI.R / 9119938TIR / 993 105 421 00 / 993-105-421-00 / 993.105.421.00 / 99310542100 / RS VALVE / RSR VALVE 01/16/2026 Show more