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Instruction Sheets for Part Number HLY-20-73
Holley Vacuum Secondary Carburetor Accessories
Dual Quick Change Covers, Vacuum Diaphragm, Plastic, Black, Holley, with Balance Tube for Dual Carbs, Pair
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Estimated Ship Date from Texas: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
20-73
Part Type:
Product Line:
Summit Racing Part Number:
HLY-20-73
UPC:
090127036389
Vacuum Secondary Cover Material:
Plastic
Vacuum Secondary Cover Color:
Black
Quantity:
Sold as a pair.
Holley Vacuum Secondary Carburetor Accessories
Holley offers vacuum secondary carburetor accessories that can be used as replacements or for use in upgrading your present carburetor. From diaphragms to spring kits, covers to quick-change kits and more, Holley has the part accessories you need to keep your carburetor at peak performance.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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