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Holley 0-80684 350CFM Refurb Replacement Outboard Carb for 300-521 Tri-Power

350 CFM Outer Carburetor for Tri-Power setup P/N 300-521 - Dichromate Finish - No Choke


PART# FR-80684

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The world famous Holley Tri- Power Carburetor system is legendary in Chevrolet circles! They were the ultimate power statement when they came factory on cars like the 1967 427 Corvette. And, NOW you can have the same look on your SB Chevy! Perfect for muscle cars, street rods, classic hot rods, rat rods, trucks and more!


  • Outer Carburetor for SBC Tri-Power set-up
  • Dichromate Finish


ConditionFactory Refurbished
Emission Code3
FinishGold Dichromate
Marine UseNo
Max Amp LoadZinc
Primary Main Jet70
Primary Pump Nozzle Size28
Product TypeFactory Refurbished Carburetor
Supercharged ApplicationNo
WarrantyLimited 90 Day
Part NumberFR-80684

Service Parts



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

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

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

Tech Resources

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.

Warranty Information

Limited 90 Day: See Details
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        Some parts are not legal for use in California or other states with similar regulations.

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