SeaEagles Carburetor Rebuild Kit for Holley 390–750 CFM (37-119) — seals, needle & pump parts

Complete rebuild kit containing seals, diaphragm, needle-and-seat, pump parts and power valve to restore Holley-style 390–750 CFM carburetors.

If you need to refresh a Holley 4150/4160 or compatible Quick Fuel carburetor without replacing the entire unit, this SeaEagles 37-119 rebuild kit supplies the common wear items required for a full service. The kit is engineered to match factory fitments used on many Holley and aftermarket performance carburetors and replaces OEM service kits from brands like Barry Grant. All components are intended for fuel-system service and maintenance rather than performance tuning.

Which carburetors and part numbers does this kit fit?

This rebuild kit covers a broad range of Holley-style carburetors and associated part numbers so you can purchase with confidence. It fits Holley 390/600/750 CFM models and is compatible with Quick Fuel and several vacuum-secondary and performance catalog items.

• Compatible with Holley 390, 600 and 750 CFM units (examples: 1841849, 1850, 3310).
• Fits Holley 4150 and 4160-style bodies including Quick Fuel 3-119 variations.
• Works with vacuum-secondary Road Demon, Road Demon Jr., and Speed Demon units.
• Replaces OEM and aftermarket kits such as Barry Grant P/N 190003 and Holley P/N 37-119, 37-720, 37-754, 37-1542.

What parts are included and what do they do?

The SeaEagles kit bundles the typical consumables that fail or leak over time, allowing a complete bowl and metering block service. Components are chosen to restore sealing, fuel metering and accelerator pump operation without needing hard-to-find OEM pieces.

• Full set of bowl and metering-block washers to prevent fuel leaks and maintain proper gasket sealing.
• Standard Hi-Flow .110" needle-and-seat assembly for correct float-level fuel control.
• 30cc accelerator pump and squirter check valves to renew throttle response components.
• Vacuum-secondary diaphragm and power valve to restore secondary operation and enrich under load when required.
• Brass idle mixture screws, reusable bowl screw washers, and special no-leak fuel inlet washers to complete the rebuild.

How will installing this kit affect drivability and maintenance?

Replacing aged seals and moving parts eliminates common causes of leaks, flooding, hesitation or poor throttle response. While not a tuning kit, fresh components can make the carburetor behave more consistently and simplify future adjustments.

• Stops fuel leaks by renewing all critical washers and inlet seals.
• Restores predictable float control with a new needle-and-seat so fuel levels stay steady.
• Fresh pump diaphragm and squirters reduce stumbling on throttle transitions.
• Replacing the power valve and diaphragm helps the secondary stage operate smoothly under load.

Who is this for: This SeaEagles 37-119 rebuild kit is aimed at mechanics, home restorers and performance enthusiasts servicing Holley-style 4150/4160 carburetors or compatible aftermarket units. Choose this kit if your carburetor shows fuel leaks, poor throttle response, or inconsistent running due to age-related wear but the throttle body and primary metering towers are serviceable. It’s a practical option for anyone seeking a cost-effective, OEM-equivalent refresh rather than a full carburetor replacement.