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850 CFM Double Pumper Carburetor-Factory Refurbished

Manual Choke Mechanical Secondaries-4150

Part # FR-4781S
1 Review

850 CFM Double Pumper Carburetor-Factory Refurbished

3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

See Emissions Details
This is an official Holley Performance Factory Refurbished Carburetor.

Features:

  • Shiny finish for good looks
  • Optimized street/strip calibration that works out-of-the-box
  • Manual choke (Cable driven, hand operated) for precise cold start control
  • Mechanical secondaries for awesome tire turning performance
  • 4 corner idle allows you to precisely control your idle system
  • Dual accelerator pumps for additional fuel under initial acceleration
  • Dual feed fuel inlets for constant high volume fuel delivery
  • Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

About Holley

Looking for Holley performance products? We're the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, and more. Buy now!

Barrels4
BoosterDown Leg
Brand Holley
CFM850
ChokeManual
ConditionFactory Refurbished
Emission Code3
FinishShiny
FuelGasoline
Fuel InletDual
Marine UseNo
MaterialAluminum
Model4150
Primary Main Jet80
Primary Power Valve6.5
Primary Pump Nozzle Size31
Product TypeFactory Refurbished Carburetor
SecondariesMechanical
Secondary Main Jet80
Secondary Pump Nozzle Size31
Supercharged ApplicationNo
Throttle Bore1.750 inch
Vacuum Ports1 timed (spark) port, 1 full, and 1 PCV port
WarrantySold As-is
UPC090127649244
Part NumberFR-4781S
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.


The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle


WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
We have limited stock on this part and on rare occasion receive more orders that can be filled.  If the part is oversold, backorders will be canceled and all payments will be refunded.
Sold As-is: See Details
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*Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.