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COMP Cams Valve Springs For 990-974 - cca994-12 import_2022_03_21_012537 3606cc Engine Components::Rod Bolt KitsDual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter what the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of todays engine