SeaEagles Carburetor Rebuild Kit for Holley 4150 4‑Barrel — 37-485 Replacement Kit for 600–850 CFM with Gaskets & Power Valves

If your Holley 4150/4150C series carburetor needs a refresh, this SeaEagles 37-485 replacement kit supplies the common service parts technicians and home mechanics use to rebuild double-pump Holley carbs rated 600–850 CFM. The kit groups all routine wear items in one package so you can replace seals, metering components and diaphragms without sourcing parts individually. Components are sized to match Holley specifications and intended for gasoline 4-barrel applications including models 600, 650, 700, 750, 800 and 850 CFM.

What parts are included in the SeaEagles 37-485 rebuild kit?

The kit assembles the typical consumables needed for a top-to-bottom service: multiple gaskets and O-rings, accelerator pump diaphragm(s), needle and seat assemblies, and 125-65 6-5"Hg power valve(s). These parts target leakage, worn seals and pump failures that commonly cause drivability issues in older carbs.

• Complete gasket set for baseplate, bowls and metering blocks
• Assorted O-rings sized for Holley 4150 components
• Accelerator pump diaphragm(s) and related hardware
• Needle and seat assemblies for float bowl repair
• 125-65 6-5"Hg power valve(s) included

How will this kit help my Holley 4150 run better?

Replacing degraded diaphragms and seals reduces fuel leaks, improves throttle response and restores predictable fuel metering. Fresh needle-and-seat assemblies stop float-level related flooding while new power valves help maintain correct enrichment under load.

• Stops vacuum and fuel leaks by renewing critical seals
• Restores accelerator pump operation for crisp throttle response
• Prevents overrich/lean conditions caused by worn metering parts
• Saves time vs. hunting down individual replacement parts

Is this kit compatible with my specific Holley carburetor model?

This SeaEagles 37-485 set is designed for Holley 4-barrel performance carburetors in the 4150 family, including many double-pump and 4150C variants rated from 600 to 850 CFM. Always cross-check your carb model number and physical dimensions against the kit contents before installation.

• Intended for Holley 4150/4150C series 4-barrel carbs
• Covers double-pumper style carburetors and performance models
• Fits common CFM ratings: 600, 650, 700, 750, 800, 850
• Verify existing parts and measurements prior to rebuild

Who is this for? This rebuild kit is aimed at DIY mechanics, restoration shops and performance tuners who service Holley 4150-series carburetors and want an economical, all-in-one parts pack. It suits users comfortable with basic carb disassembly and reassembly, and those who prefer to replace all wear items during a tune-up to avoid repeat visits. If you need installation instructions, contact the seller for guidance; the package may not include printed instructions but contains the parts needed to return your carburetor to reliable operation.