AFR Valve Spring, Manley Nextek Springs 1.640 O.D. #221425-16 (SBC Requires removal of spring to install head bolt or studs and use of 7/16 bolt head size), Set of 16 (PART #AFR-8022-16)

(Set of 16) AFR 8022 - 1.640" OD Solid Roller
  • 1.640 O.D. Solid Roller Valve Spring
  • Manley Nextek #221425-16
  • 320 lbs. on seat
  • .840" max lift
  • Max RPM 8200-8400
  • Titanium Retainer: 8507
  • BBC Valve Lock: 9005
  • BBF Valve Lock: 9010
  • (1 Piece) or (Set of 16)

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