The Holley 4150 570CFM Street Avenger carburetor is designed for straightforward installation, making it a favorite among enthusiasts. With features like a quick-change vacuum secondary, tuning your setup has never been easier! Its optimized street calibrations ensure you get the performance you need right out of the box. Plus, with four vacuum ports, you can easily connect all your necessary vacuum accessories. Say goodbye to cold start struggles with the factory preset electric choke, and enjoy the convenience of built-in fuel filters. To top it off, this kit includes a fuel line, saving you from those pesky trips to the parts store.

What’s even better? The Avenger series stands out as the first carburetors to come with a limited lifetime warranty. With this kind of coverage and a detailed instruction manual included, you can expect years of reliable service without any worries.

• Instructions for Part# 0-80570
• Avenger Limited Lifetime Warranty
• Exploded Labeled View
• Carburetor Numerical Listing for Part #0-80570

• Vibratory polished for an attractive finish
• Optimized street calibration that works right out of the box
• Factory preset electric choke for hassle-free startups
• Vacuum secondaries make it versatile for various vehicles. The quick-change vacuum housing cap lets you tune for either performance or fuel efficiency (springs included)
• Compatible with GM, Chrysler, and Ford A/T kickdown linkage (additional parts may be necessary)
• Includes a fuel line kit to eliminate unnecessary trips to the store
• Limited lifetime warranty—guaranteed against defects in material and workmanship for the product's life!
• 100% wet-flow tested by Holley technicians, ensuring it’s ready to run right out of the box!

• Barrels: 4
• Booster: Straight
• CFM: 570
• Choke: Electric
• Emission Code: 3
• Finish: Shiny
• Fuel: Gasoline
• Fuel Inlet: Dual
• Material: Aluminum
• Model: 4150
• Primary Main Jet: 64
• Primary Power Valve: 6.5
• Primary Pump Nozzle Size: 31
• Product Type: 4150 Model Carburetor
• Secondaries: Vacuum
• Secondary Main Jet: 68
• Supercharged Application: No
• Throttle Bore: 1.562 inches
• Vacuum Ports: 1 timed (spark) port, 2 full, and 1 PCV port
• Warranty: Limited 1 Year Warranty

• This carburetor features a square bore flange bolt pattern, allowing it to replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with a 5 3/16" x 5 5/8" bolt pattern. If you have a spreadbore style intake manifold, an adapter will be required for installation, similar to the Mr. Gasket #1932.