KEF Holley Performance 6 504 6 504 Needle & Seat Assmb P14815382KEF-H196504 https://cdnimages.opentip.com/full/KEF/KEF-H196504.jpg Holley Performance 6 504 6 504 Needle & Seat Assmb Manufacturer Part Number: 6-504Carburetor Needle and Seat; For Use With Most Holley Performance Carburetors; High Flow; Adjustable; 0.110 Inch Seat Size; Viton; Single; With All Necessary HardwareAttributes Compatibility: Most Holley Performance Carburetors Flow Type: High Flow Adjustable: Yes Seat Size: 0.110 Inch Material: Viton Includes Hardware: Yes Quantity: Single Product Description Holley offers a number of needle and seat assemblies for its Carburetors. The configuration of the needle and seat assembly and its seat size depend on Carburetor application, CFM size and type of fuel bowl used. Operation is simple. Needle movement is controlled by a metal tang on the float arm. Upward movement of the float causes the needle to close the seat, downward float movement causes the needle to open the seat. Seat size determines how much fuel can flow at a certain pressure. A bigger seat size will flow more fuel, a smaller seat size will flow less fuel at a given pressure. Most Holley performance Carburetors come equipped with a Viton® tipped needle. The Viton® needle design is resistant to dirt and conforms nicely to the shape of the seat for superior sealing.Features & Benefits A Bigger Seat Size Will Flow More Fuel, A Smaller Seat Size Will Flow Less Fuel At A Given Pressure The Viton® Needle Design Is Resistant To Dirt And Conforms Nicely To The Shape Of The Seat For Superior Sealing Genuine Holley Quality Parts Designed For Performance And Durability Limited 90 Day Supplier Warranty 14815382 090127075029 0.5000lbs 0.00 0.00 0.00

Holley Performance

27.9800 2025-07-14 30 In Stock Holley Performance 6 504 6 504 Needle & Seat Assmb

Holley Performance 6-504 6-504 Needle & Seat Assmb

Brand Holley Performance

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Product Description

Manufacturer Part Number: 6-504

Carburetor Needle and Seat; For Use With Most Holley Performance Carburetors; High Flow; Adjustable; 0.110 Inch Seat Size; Viton; Single; With All Necessary Hardware

Attributes

Compatibility: Most Holley Performance Carburetors
Flow Type: High Flow
Adjustable: Yes
Seat Size: 0.110 Inch
Material: Viton
Includes Hardware: Yes
Quantity: Single

Product Description

Holley offers a number of needle and seat assemblies for its Carburetors. The configuration of the needle and seat assembly and its seat size depend on Carburetor application, CFM size and type of fuel bowl used. Operation is simple. Needle movement is controlled by a metal tang on the float arm. Upward movement of the float causes the needle to close the seat, downward float movement causes the needle to open the seat. Seat size determines how much fuel can flow at a certain pressure. A bigger seat size will flow more fuel, a smaller seat size will flow less fuel at a given pressure. Most Holley performance Carburetors come equipped with a Viton® tipped needle. The Viton® needle design is resistant to dirt and conforms nicely to the shape of the seat for superior sealing.

Features & Benefits

A Bigger Seat Size Will Flow More Fuel, A Smaller Seat Size Will Flow Less Fuel At A Given Pressure
The Viton® Needle Design Is Resistant To Dirt And Conforms Nicely To The Shape Of The Seat For Superior Sealing
Genuine Holley Quality Parts
Designed For Performance And Durability
Limited 90 Day Supplier Warranty

Attention CA Residents: Prop 65 Warning

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.