JDLLONG 4160 Series Carburetor Rebuild Kit for Holley 1850/3310/9776 — Complete Gasket & Seal Set (570–770 cfm)

JDLLONG's 4160 Series Carburetor Rebuild Kit is a complete gasket, seal, and small-parts set designed to restore Holley 4160 vacuum-secondary carburetors (1850/3310/9776 and related numbers) to reliable operation without replacing the entire carburetor.

Whether you're refreshing a classic small-block or maintaining a weekend cruiser, this rebuild kit supplies the common rubber and paper parts you'll need for a thorough overhaul of Holley 4160-series vacuum-secondary carbs in 570–770 cfm sizes. The kit corresponds to factory-style components and matches many Holley list numbers, making it a practical, cost-effective way to stop leaks, eliminate vacuum loss, and prepare the carburetor for jetting or tuning.

What parts are included and how complete is this kit?

The kit contains the typical gaskets, O-rings, seals, and small hardware pieces used when rebuilding a 4160 vacuum-secondary Holley carburetor. It’s intended to cover routine gasket and seal replacement rather than mechanical parts like shafts or accelerator pumps unless pictured.

• Complete gasket set for base, metering block, and throttle plates
• Rubber O-rings and vacuum seals commonly used on 4160 carbs
• Small hardware pieces as shown in the product image for standard rebuild steps
• Part references include 159064, 37-119 and compatible Holley list numbers (1850, 3310, 9776, etc.)

Which Holley carburetors and part numbers does this fit?

This kit fits Holley 4160-series vacuum-secondary carburetors in 570, 600, 650, 670, 750 and 770 cfm configurations and is cross-referenced to many common Holley list numbers. Always compare part pictures and numbers to your carb to ensure compatibility before starting work.

• Compatible with Holley 4160 vacuum-secondary series (570–770 cfm)
• Cross-references: List-1850, List-3310, List-9776 and many variants
• Manufacturer part references: 159064, 37-119, 3-304, 3-305 as listed

How should I prepare and use the kit during a rebuild?

Prepare by disassembling the carburetor on a clean bench, photographing each stage if needed, and laying out old parts for comparison. Use carburetor-safe cleaner, replace all paper and rubber items in the kit, and follow torque and float-level settings from a Holley service manual for your model.

• Work on a clean, well-lit surface and keep fasteners organized
• Clean metal parts with solvent and inspect for wear or damage
• Replace all gaskets and seals from the kit before reassembly

Will this kit fix performance issues like fuel leaks or rough idle?

Replacing worn gaskets and seals often resolves fuel leaks, vacuum loss, and related idle inconsistencies caused by perished materials. If internal wear, damaged shafts, or sticking floats are present, additional parts or a professional rebuild may be required.

• Ideal for stopping leaks caused by aged paper or rubber components
• Helps restore proper vacuum and sealing surfaces for stable idle
• Not a substitute for mechanical parts replacement if shafts or metering blocks are damaged

Who this is for: The JDLLONG 4160 Series Carburetor Rebuild Kit is aimed at home mechanics, restoration enthusiasts, and professional shops rebuilding Holley 4160 vacuum-secondary carburetors. If your carburetor matches the listed Holley numbers and needs a comprehensive gasket-and-seal refresh, this kit provides the standard components required for a thorough rebuild.