They are designed to be exact replacements for your existing Holley 3310 model 4160 series carburetor, so they don't require any modifications to install them correctly. Manufactured from quality die-cast zinc with a gold iridite finish, this Holley replacement metering block will keep your carburetor running correctly.

Features and Benefits:

• Gaskets Included

Details:

• Color: Gold Dichromate
• Finish: Gold Iridite
• Gasket Or Seal Included: Yes
• Grade Type: Performance
• List Number: 3310.0
• Material: Cast Zinc
• Metering Jets Included: No
• Model: 4160 600 CFM
• Warranty: Manufacturer's Limited 90 Day Warranty