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Holley Vacuum Secondary Spring Kit

Item #: HLY20-13

Price: $14.95

Quantity:

PRODUCT DESCRIPTION

Fits: 4150/4160/4500, Holley, Mighty Demon

Vacuum Secondary Springs, Road, Speed, Set of 7

Vacuum Secondary Spring Material: Steel

Quantity: Sold as a set of 7.

These Holley vacuum secondary spring kits are designed to fine-tune your carburetor. They have an effect on initial operating and full upper rpm.