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Edelbrock vacuum secondary spring kit (#12412) contains seven springs that fit Holley 4150, 4150HP and 4160-style carburetors as well as various Demon carburetors. Use this kit to replace worn vacuum secondary springs and restore correct secondary operation and throttle progression on compatible carburetor models.
Edelbrock Vacuum Secondary Spring Kit Includes 7 Springs Fits Holley 4150 4150Hp 4160 Series
