1.580 Dual Valve Springs Valve Spring - NexTek - Dual Spring - 535 lb/in Spring Rate - 1.170 in Coil Bind - 1.580 in OD - Set of 16

1.250 Spring Cups Valve Spring Locator - Outside - 0.062 in Thick - 1.390 in OD - 0.570 in ID - 1.250 in Spring OD - Steel - Black Oxide - Set of 16

1.437 Spring Cups Valve Spring Locator - Outside - 0.062 in Thick - 1.550 in OD - 0.687 in ID - 1.437 in Spring OD - Steel - Black Oxide - Set of 16

Extended Spring Cup Spring Cup - Lightweight - Upper - Bolt-On - 2.5 in Tall - Steel - Black Powder Coat - 5 in Springs - Each

GN Spring Cup Spring Cup - Upper - Screw-On - 1-8 in Thread - 6 in ID - 5.125 in Height - Grease Fitting - Steel - Natural - Universal - Each

1.677 Spring Cups Valve Spring Locator - Outside - 0.062 in Thick - 1.740 in OD - 0.570 in ID - 1.677 in Spring OD - Steel - Black Oxide - Set of 16