This is an official Holley Performance Factory Refurbished Carburetor. Factory Refurbished carbs are NOT old worn-out carbs that have been rebuilt. They are carbs that were returned under warranty. When these carbs are returned, we check them out and most of the time there is nothing wrong with them. Generally, they were simply adjusted out of working range by the installer. Since these carbs may show signs of a previous installation, our policy is not to sell them as new. Rather than scrapping them, we are making them directly available to the public. Not only does this help us control the costs of our new carbs, it allows you to get a great deal on a like-new carburetor! Factory Refurbished carbs have undergone a thorough inspection. Any damaged parts that would effect performance have been replaced and the carbs are solvent cleaned before being wet-flow-tested on Holley's state-of-the-art flow benches allowing them to be recalibrated to new carb specs. Factory Refurbished carbs may have scratches, blemishes, and other visual flaws from previous installation.
Factory Refurbished Carburetors have limited availability.
Aluminum construction for 43% weight savings
Tumble polished finish holds shine longer
Billet metering blocks & base plates
Black anodized billet aluminum metering blocks and base plate
Built in sight window for simple float adjustments
High-performance fuel curves
The Ultra Street Avenger carburetors feature all aluminum construction and are equipped with metering blocks and a base plate made from 6061-T6 billet aluminum. Three different anodized color options (Red, Blue, or Black) allow for a personalized look while maintaining the ultra-high strength and durability you get from billet. They weigh in at approximately 5 lbs less than a comparable zinc carburetor.
The new Ultra Street Avenger carburetors have the same great features as their aluminum counterparts such as a tumble polished aluminum finish; quick change vacuum secondaries for easy tuning to optimize performance or fuel economy; four vacuum ports for all necessary vacuum accessories; factory preset electric choke for easy startups; built-in fuel filters; and an included fuel line kit so there are no unnecessary trips back to the parts store. Ultra Street Avengers feature the same optimized street calibration as the zinc versions so you know they will run great on your vehicle. In addition, the Ultra Street Avenger now comes with anodized metering blocks and a base plate made from 6061-T6 billet aluminum and a built in, clear fuel level sight glass for easy, no mess fuel level adjustments.
The clean, polished look coupled with Red, Blue, or Black metering blocks and throttle body will certainly set your ride apart whether you are at the show or track.
Don't trust your performance to just anyone, Holley is the only Modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.
Shiny with black anodized billet aluminum metering blocks/base plate for good looks and true gasket sealing
Ultra Street Avengers feature an optimized street calibration that works-out-of-the-box
Factory preset electric choke for easy startups
Vacuum secondaries allow use on a wide variety of vehicles. Quick Change vacuum housing cap allows you to tune for performance or fuel economy (springs included)
4 corner idle allows you to precisely control your idle system
Built in, clear fuel level sight glass for easy, no mess fuel level adjustments
Aluminum construction for a 43% weight savings
Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required.
Fuel line kit included so there are no unnecessary trips back to the parts store
100% wet-flow tested by Holley technicians to assure it arrives ready to run!
Use our simple CFM calculator to learn what CFM you need:
Your ideal CFM range is XXX.
You should stay as close as you can to this CFM and should go no more than 50 CFM in either direction.
In order to get a proper estimate, we need a little more information from you.
Please contact Tech Service at
If you have any other questions, contact Tech Service at
How to pick a choke:
Manual chokes allow the user to control the warm up of their engine by physically pulling a cable inside the vehicle to control the choke plate. This type of choke is generally less expensive than an electric choke.
Electric chokes fully handle the warm up of your engine without your assistance. They operate off a single 12 volt switched power wire from your vehicle.