goodbest Carburetor Rebuild Kit for Holley 4160 Series 600 CFM — Vacuum-Secondary Gaskets & Diaphragms

Goodbest's complete rebuild kit supplies all the replacement gaskets, seals, and small parts needed to restore a Holley 4160-series 600 CFM vacuum-secondary carburetor to reliable function.

If your Holley 4160-series carb (600 CFM) is showing leaks, poor throttle response, or inconsistent idle, a comprehensive rebuild kit replaces the worn rubber, cork, and gasket components that commonly fail over time. This kit is designed to fit a range of Holley part numbers and vacuum-secondary models so you can refresh the carburetor without purchasing a full replacement unit.

What exactly is included in the Goodbest rebuild kit?

The Goodbest kit contains the essential gaskets, O-rings, diaphragms, and small hardware required for a typical rebuild of a 4160-series vacuum-secondary carburetor. It replaces the original wear items that prevent proper sealing and operation.

• Full set of base and throttle plate gaskets
• Rubber seals and O-rings for boosters and fuel passages
• Vacuum-secondary diaphragms and related seals
• Small install hardware and pictured components

Which Holley models and list numbers does this fit?

Goodbest designed this kit to be compatible with Holley 4160 vacuum-secondary carbs in common CFM ratings and many factory list numbers, making it suitable for restores and performance projects using those specific applications.

• Fits Holley 4160 series vacuum-secondary 570, 600, 650, 670, 750 and 770 CFM models
• Compatible with Holley list numbers such as 1850, 3310, 8007 and others
• Replaces OEM part number 159064 where applicable
• Verify your carb’s model and list number before ordering for exact compatibility

How do I use the kit to rebuild my carburetor?

Rebuilding a carburetor requires clean workspace, basic hand tools, and attention to parts placement. Follow a repair manual or step-by-step guide specific to Holley 4160-series carburetors to achieve correct reassembly and adjustments.

• Disassemble carburetor on a clean bench, photographing steps for reference
• Clean all metal parts thoroughly with carb cleaner and air-dry before installing new seals
• Replace all worn gaskets, diaphragms, and O-rings from the kit in matched locations
• Reassemble and adjust float level, mixture, and secondary spring settings per Holley specs

Who is this for? If you own a vehicle with a Holley 4160-series vacuum-secondary carburetor and you’re seeing fuel leaks, hesitant throttle response, or erratic idle, this Goodbest rebuild kit gives you the replacement consumables required to overhaul the carburetor. It’s aimed at DIY mechanics, restoration shops, and performance builders who want to refresh original components without replacing the entire carburetor. Always cross-check your carburetor’s list number with the kit’s compatibility and consult a service manual if you’re uncertain about tuning or reassembly.