Ultra XP Carburetor; 4 bbl; 600 cfm; 2 Circuit Metering; Gas; Model 4150UXP; Dbl Accel. Pump; Dual Fuel Inlet; Hard Core Gray w/Black Metering Block/Booster Inserts;

Xtreme Performance - Holley Ultra XP carburetors! Ultra XP carbs are up to 38% lighter than our traditional race carbs, have fuel capacity that is 20% greater and 30 other new features! They're available in our all-new Hard Core Gray hard coat anodized finish with Black billet for improved corrosion protection. They're also available in natural tumble-polished aluminum with your choice of Black or Red metering blocks and base plate. The Aluminum Ultra XP comes in 600, 650, 750, 850, and True 950-CFM. Holley Ultra XP carburetors offer new features such as an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship, high capacity fuel bowls which feature 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh. Other features include all aluminum construction, fully tunable billet metering blocks, billet base plate, adjustable secondary linkage and knurled (hand adjustable) curb idle screws. Holley Ultra XP carburetors are the ultimate in square bore race carburetors!

• Aluminum Construction
• Saves 4.5 Pounds 38% Weight Savings
• Contoured Venturi Inlet Balances Airflow For Increased Hp
• Air Bleeds Moved Outward For Smoother Transition Of Airflow
• Metering Blocks/True Gasket Sealing/Fully Adjustable
• Idle Bypass Valve Eliminates Holes In Throttle Plates
• Dual 30Cc Accelerator Pumps Fuel From Idle To Full Throttle
• Fuel Bowls Provide 20% More Fuel Capacity Controls Slosh
• Clear Sight Windows On Both Sides Of Bowls For Safe Fuel Level
• Drain Plug On Bowl Provides Easy Access To Empty Bowl
• 8An O-Ringed Inlet Threads Offer A Variety Of Plumbing Options
• 4 Corner Idle Allows You To Precisely Control Your Idle System

Barrel:	Four
Billet Color:	Hard Core Gray with Black
Booster Type:	Down Leg
Carburetor Type:	4150
CFM:	600
Choke:	None
Circuit:	2
Emission:	Without EGR
Finish:	Hard Core Gray
Flange:	Square Bore
Fuel Inlet:	Dual
Fuel Type:	Gasoline
Material:	Aluminum
Primary Main Jet:	68
Primary Power Valve:	6.5
Secondary Main Jet:	68
Secondary Pump Nozzle Size:	32
Secondary Type:	Mechanical
Supercharged Application:	No
Throttle Bore:	1.563 in.
Type:	Automotive
Usage:	Street/Hi-Performance
Venturii Size:	1.250 in.
WARNING CA Proposition 65:	Yes
WARNING CA Proposition 65 Message:	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov