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

Complete rebuild kit for Holley-style 390–750 CFM carburetors, supplying seals, diaphragm, needle & seat, power valve and accelerator pump parts to restore reliable fuel metering.

This SeaEagles 37-119 carburetor rebuild kit is designed to refresh Holley 4150/4160 Quick Fuel and many OEM and aftermarket Holley-style carburetors. It gathers the common wear components you need to repair leaks, restore pump action, replace aging metering parts and update inlet fittings so the carburetor performs consistently again without sourcing dozens of individual components.

Which carburetors does this kit fit?

The kit is engineered for Holley-style 390, 600 and 750 CFM carburetors and equivalent Quick Fuel/Barry Grant applications. It matches Holley part numbers and common aftermarket vacuum-secondary and mechanical-secondary street performance carburetors.

• Compatible with Holley 390/600/750 CFM models and numbers like 1841849, 1850, 3310, 6619, 6909, 8007, 9834, 80457, 80463, 80508, 80529.
• Fits Holley Quick Fuel 37-119 and Holley 4150/4160 housings.
• Works with Road Demon Jr, Road Demon, and vacuum-secondary Speed Demon style carburetors.
• Direct alternative to Barry Grant P/N 190003 and Holley P/Ns 37-119, 37-720, 37-754, 37-1542.

What parts are included and what do they fix?

This kit bundles the typical replacement parts that wear out or fail first in older carburetors. Replacing these items addresses fuel leaks, worn needles/seats, collapsed diaphragms and weak accelerator pump output.

• Needle & seat (standard hi-flow .110") and fuel inlet washers to stop leaks and restore float control.
• 30cc accelerator pump, pump squirter check valves and pump diaphragm to recover crisp throttle response.
• Power valve, new brass idle mixture screws, and metering/metering block washers for stable idling and midrange fuel delivery.
• Nylon reusable bowl screw washers and air horn/base washers for reliable reassembly and sealing.

How does installing this kit improve performance on the street or track?

Replacing aged seals, diaphragms and metering pieces helps the carburetor deliver consistent fuel flow and predictable throttle response. The result is fewer fuel leaks, steadier idle and restored pump action under acceleration—important for daily drivers and performance builds alike.

• Eliminates common vacuum and float leaks that cause stumbling or rich/lean conditions.
• Restores accelerator pump volume and check-valve function for immediate throttle recovery.
• New power valve and metering washers help maintain proper fuel enrichment during load transitions.
• Reusable washers and standardized fastener seals simplify future maintenance.

What should I know before buying and installing this kit?

This kit supplies the universal wear items but does not replace internal jets, gaskets for unusual models, or worn throttle shafts. Have basic carburetor tools and a service manual or exploded diagram handy so you can verify model-specific jetting and linkage parts before starting.

• Verify your carburetor model and CFM rating before ordering to ensure compatibility.
• Inspect throttle shafts, jets and choke assemblies; buy additional parts if they show wear.
• Use carburetor cleaner and a rebuild bench or clean area to avoid contamination during assembly.
• Consider tuning or professional setup after rebuild to optimize jetting for your engine.

Who is this for: The SeaEagles 37-119 rebuild kit is aimed at DIY mechanics, classic car restorers and performance enthusiasts who own Holley-style 390–750 CFM carburetors or equivalent Quick Fuel/Barry Grant units. If you need to stop leaks, renew pump action and replace common worn components without sourcing many separate parts, this kit gives a practical, cost-effective set of replacements to get the carburetor back into reliable service.