Holley Needle & Seat 6-504

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Holley Needle & Seat 6-504

Holley Needle & Seat 6-504

Original price was: $24.22.Current price is: $12.98.

48 in stock

SKU: HLY6-504 Category:

Description

A worn or improperly seated needle and seat assembly directly impacts fuel delivery precision and carburetor response—critical factors for consistent performance across wide throttle ranges. The Holley 6-504 restores tight metering control, eliminating lean surges and fuel starvation that compromise acceleration and reliability. Whether you’re rebuilding a street carb or fine-tuning a race engine, this adjustable assembly gives you the exact fuel regulation your application demands.

  • Needle and seat assembly
  • Adjustable design
  • 0.110″ orifice
  • Viton seals included
  • Holley carburetor compatible
  • Sold individually
  • Bolt-on installation

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