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Holley Inlet Needle Titanium 6-521

Holley Inlet Needle Titanium 6-521
Holley Inlet Needle Titanium 6-521Holley Inlet Needle Titanium 6-521Holley Inlet Needle Titanium 6-521Holley Inlet Needle Titanium 6-521
$54.99 ea
NEWBackordered until 04/06/2023
Model: 3992837
Supplier has not provided any fitment data for this product.
[More Info]
With a .150 inch seat, this needle and seat assembly is about as big as you can get. What's really trick, though, is that the needle is made of titanium. This needle design is very responsive to changes in flow rates and has excellent sealing capabilities.
  • Adjustable
  • Titanium Needle
  • Compatible With Racing Fuels
Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations

About Holley Performance Products

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!


Download Name File Size


Emission Code 5
Part Type Carburetor Needle and Seat
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm


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Holley Inlet Needle Titanium 6-521:
Classic Nova 2023