SKU: 292745296

500 CFM Ultra XP 2BBL Carburetor - 0-4412HBX

Sale price$414.88 Regular price$460.98
Save 10%

Pay in installments of $115.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

500 CFM Ultra XP 2BBL Carburetor - 0-4412HBXOverview: The original Holley 0 4412 has powered thousands of racers to the winners' circle! How do you make it better? Add the proven design elements of the popular Ultra series for more tunability, more durability, more weight savings and more features! The Ultra XP 2bbl carburetors feature all aluminum construction for nearly 50% weight savings over their zinc counterparts, contoured venturii inlet for unobstructed airflow, screw in air bleeds for

Overview:

The original Holley 0-4412 has powered thousands of racers to the winners' circle! How do you make it better? Add the proven design elements of the popular Ultra series for more tunability, more durability, more weight savings and more features! The Ultra XP 2bbl carburetors feature all aluminum construction for nearly 50% weight savings over their zinc counterparts, contoured venturii inlet for unobstructed airflow, screw in air bleeds for easy fine tuning, black anodized fully adjustable billet aluminum metering block and baseplate, high capacity fuel bowl which features 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh and a centered air cleaner flange for improved airflow and performance. Other notable features include wedged floats, knurled hand adjustable curb idle screw and down leg boosters. Ultra XP 2bbl carburetors are approved for use in NASCAR® Mid-West/West Coast Late Model Divisions and utilize the same venturii and throttle bore dimensions of the classic 4412 2bbl carburetor. Available in shiny or Hard Core Gray finishes, the Ultra XP 2bbl will outperform any production 2bbl available.

Features:

  • All aluminum construction - for nearly 50% weight savings over zinc version
  • Hard Core Gray with 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 venturii 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” Venturii & 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
  • -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
  • Throttle shaft rides in oil impregnated sintered bronze bushings for smooth throttle actuation
  • Throttle shaft capped to prevent entry of debris & contaminates
  • 30cc pump with metal lever. Anti-siphon valve in mainbody to reduce pump pull over
  • 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!

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Barrels 2
Billet Color Hard Core Gray with Black
Booster Down Leg
Brand Holley
Carburetor Use Performance and Race
CFM 500
Choke None
Condition New
Emission Code 3
Finish Hard Core Gray
Fuel Gasoline
Fuel Inlet Single
Marine Use No
Material Aluminum
Model 2300
Primary Main Jet 74
Primary Power Valve 3.5
Primary Pump Nozzle Size 28
Product Type Carburetor
Secondaries None
Supercharged Application No
Throttle Bore 1.688 inch
Venturii Size 1.376 inch
Warning California Proposition 65
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 292745296

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 26 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jess
Chelsea, US
★★★★★ 5
Great for kids!
Color: White
I bought this stylus for the kids to use with their iPads, and it definitely gets the job done. It connects easily, charges fast, and works smoothly for drawing, writing, and playing around on apps. The palm rejection is a big plus—it makes it a lot easier for them to use without messing up what they’re doing. It’s also pretty responsive, which I wasn’t necessarily expecting at this price. Overall, it served its purpose well. If you’re looking for something affordable and functional for kids (or even light everyday use), this is a solid option.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
T
Verified Purchase
Thomas
Los Angeles, US
★★★★★ 5
Rock-Solid Apple Pencil Replacement for iPad Mini
Color: White
Despite the box arriving pretty beat up inside the Amazon packaging, the pen itself was in perfect condition and it’s been outstanding. It works flawlessly with my iPad Mini (Gen 7, A17). The physical on/off button is a standout feature for me; the tactile click is far more satisfying and reliable than the touch-sensitive controls found on other pens. I primarily use this stylus while flying, taking notes in the air, and it performs exactly how I need it to. The magnetic attachment is especially impressive because it’s strong enough to add real security inside my iPad case. Even in rough air, I don’t have to worry about it getting knocked loose. I previously used a pencil from another brand that worked fine overall, but the weak (or nonexistent) magnetic hold was a dealbreaker. This one solves that problem completely and when it came time to buying a new pencil because I lost the old one, this was my choice. If you’re looking for a dependable, well-built Apple Pencil replacement with a solid magnetic connection and a satisfying physical control, this is an easy recommendation. You also CANNOT go wrong with the price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
D
Verified Purchase
DLE
Waukegan, US
★★★★★ 5
Perfect stylus for my iPad.
Color: White
This stylus works great! It was easy to set up, and is perfect for my needs. The pen is the perfect weight and seems to be made of good material. I anticipate it will last a long time. The pen came charged and I still haven’t charged it. If you like using a stylus on an iPad, this one feels just like using a pencil. I like to write, so this has been a great choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
T
Verified Purchase
Taylor
Waukegan, US
★★★★★ 5
Great product!
Color: White
I have now purchased two of these (I lost the first one) and they are absolutely a worthwhile purchase. Nicely packaged, easy set up, works great! Battery life is great and the pencil charged fairly quickly as well. Size of the pencil is wonderful, easy to hold and grip. Quality is great as well. 5 stars from me, hopefully I don’t lose this one! 🤣
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
Q
Verified Purchase
Quynn Campbell
Port Orchard, US
★★★★★ 5
Works amazingly as intended, good value
Color: White, Color: White
Writes perfectly on my ipad. Worked immediately on my Bluetooth, didn’t have to connect. Holds charge very well from what I can tell. I finished a 10 hour long drawing process without it dying. I’ll update if anything changes. Comes with extra nibs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026

recommand products