Holley Vacuum Secondary Carb Spring Adjustment Kit Assortment - $10 (Arlington Heights)

Holley Vacuum Secondary Carburetor Spring Adjustment Kit Assortment Sold as a 7 Piece Spring Kit Use This Spring Kit to Adjust The Vacuum Secondary Opening RPM Springs Included are listed from Lightest (Fastest Opening) to Heaviest (Delayed Opening) White, Yellow (Short), Yellow, Purple, Plain, Brown & Black These are Genuine Holley Performance Parts Holley Part Number 20-13 These Work With Most 4150 & 4160 series AED, Avenger, Barry Grant, Demon, Quick Fuel & Street Avenger Vacuum Secondary Carburetors