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Holley

500CFM Ultra XP 2BBL Carburetor- E85

Factory Refurbished

Part # FR-4412EX Be the first to write a review

500CFM Ultra XP 2BBL Carburetor- E85

3

Emissions

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

See Emissions Details

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This is an official Holley Performance Factory Refurbished Carburetor.

Features:

  • E85 Fuel Compatible
  • All aluminum construction - for nearly 50% weight savings over zinc version
  • Black billet aluminum metering block and base plate
  • No choke tower for unobstructed airflow
  • Air bleeds moved outward to allow a smoother transition of airflow
  • Air cleaner flange centered over venturi for improved airflow and performance. 5/16-18 bent air cleaner stud included
  • Down-leg boosters for improved fuel signal
  • Contoured hex head squirter screw for streamlined airflow
  • Internal pump passage on metering block equipped with tunable bleed off
  • Same 1-3/8” venturi & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412
  • Fuel bowl provides 20% more fuel capacity while controlling slosh with internal baffling
  • Clear sight windows on both sides of bowl for easy & safe fuel level adjustments
  • Fuel trough designed into floor of bowl to route fuel flow directly to the jets and assists in keeping jets covered by fuel
  • Built in drain plug provides easy access to empty contents of bowl
  • Throttle shaft rides in oil impregnated sintered bronze bushings for smooth throttle actuation
  • Throttle shaft capped to prevent entry of debris & contaminates
  • 50cc pump with metal lever. Anti-siphon valve in main body to reduce pump pull over
  • -8 (O-ring) inlet threads offer a large variety of plumbing options (come with an extended -8 O-ring to -8AN male adapter and -8 plug). Can be plumbed from either side
  • Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed
  • Knurled (hand adjustable) curb idle screw allows for easy idle adjustment without the use of tools
  • Set screw for wide open throttle stop adjustment
  • Wedge float provides fuel control while cornering
  • 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!

Barrels2
Billet ColorHard Core Gray with Black
BoosterDown Leg
Brand Holley
Carburetor UsePerformance and Race
CFM500
ChokeNone
ConditionFactory Refurbished
Emission Code3
FinishHard Core Gray
FuelE85
Fuel InletSingle
Marine UseNo
MaterialAluminum
Model2300
Primary Main Jet88
Primary Power Valve3.5
Primary Pump Nozzle Size35
Product TypeFactory Refurbished Carburetor
SecondariesNone
Supercharged ApplicationNo
Throttle Bore1.688 inch
Venturii Size1.376 inch
WarrantySold As-is
UPC090127725900
Part NumberFR-4412EX
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
Holley Carburetor Selector
Instructions for Part# 0-4412EX
Ultra XP 2 Barrel Carburetor Product Flyer
Carburetor Numerical Listing for Part #0-4412EX
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.