Holley Needle & Seat - "Steel" Needle and Seat (Adjustable w/ .150" Seat)

Steel-tipped inlet needles are necessary when using exotic racing fuels or alcohol or when using benzine or acetone additives. a . 097" seat size should be used for small four barrel carburetors; a . 110" seat size should be used for carburetors up to 735 CFM; larger seat sizes should be used with carburetors 750 CFM and larger. "Adjustable" needle and seat designs allow external float adjustment, without removing the fuel bowl. The "non-adjustable" needle and seat design does not provide for external float adjustment. The fuel bowl must be removed for this procedure. All Holley model 2010, 2300, 4010, 4011, 4150, 4160, 4165, 4175 and 4500 DOMINATOR carburetors will take either one version or the other. Center hung fuel bowls use only the "adjustable" style needle and seat, as do all model 2010, 4010, 4011 and 4500 DOMINATOR carburetors. Side hung fuel bowls have come in a variety of styles over the years and have used both the "adjustable" and "non-adjustable" styles needle and seats.

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every 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!

Carburetor Needle and Seat

Adjustable

Steel Inlet Needle

Operation Is Simple

Product Description:

Needle and Seat

Adjustable

0.150 Orifice

Steel

Holley Carburetors

Pair

For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.