Description
Carburetor tuning starts with precision fuel metering, and main jets are the foundation of that process. If your Holley carb is running rich or lean at cruise and part-throttle conditions, swapping to the correct jet size is one of the most direct ways to dial in your air-fuel ratio without expensive dyno time. These brass jets are OEM-spec replacements that restore proper atomization and fuel delivery when stock jets no longer match your engine’s modified displacement, ignition timing, or intake design.
- Holley main jet pair
- Number 73 size
- 0.079 inch ID
- Brass construction
- Bolt-in replacement
- Fits Holley carburetors
