• Holley 6-521 Adjustable Needle and Seat Assembly, .150-Inch Orifice
  • Holley 6-521 Adjustable Needle and Seat Assembly, .150-Inch Orifice

Holley 6-521 Adjustable Needle and Seat Assembly, .150-Inch Orifice

$51.95 USD
$51.95 USD
$51.95 USD
Shipping calculated at checkout.

Vendor : HOLLEY

Product Type : Air and Fuel

Sku : HLY6-521

✔ Veteran-Owned Business  |  ✔ Verified Fitment (SEMA Data)  |  ✔ Ships 1–3 Business Days  |  ✔ 30-Day Returns 

.150in Needle & Seat Assembly

The Holley 6-521 Needle and Seat Assembly is designed for use with Holley carburetors. This adjustable assembly features a .150-inch orifice and is constructed from titanium.

Intended for carburetor service and replacement applications, the adjustable design allows needle-and-seat settings to be tailored during installation. The assembly is sold individually for convenient replacement of a single component.

Choose the Holley 6-521 for a titanium needle and seat assembly with a .150-inch orifice and adjustable functionality.

Features:

  • Adjustable design: Allows needle-and-seat settings to be adjusted during installation
  • .150-inch orifice: Provides the specified orifice size for the assembly
  • Titanium construction: Made with titanium material
  • Holley carburetor application: Designed for use with Holley carburetors
  • Sold individually: Supplied as one needle and seat assembly