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Vehicle Info NeededAdjustable Carburetor Needle and Seat Assortment, 0.110 in. Seat, 10-Pack
Ships on Sep 11, 2026
Lowest Price GuaranteeThe Holley 1018-135 is a 10-pack of part number 6-504 needle-and-seat assemblies for center-hung fuel bowl carburetors. Each is externally adjustable with a 0.110 in. seat and a Viton-tipped needle suited to gasoline, allowing float-level adjustment without removing the bowl. The bulk 10-pack is ideal for the carburetor builder or for track-side spares.
Holley 1018-135 Features:
- Ten 6-504 needle-and-seat assemblies
- Adjustable 0.110 in. seat size
- Viton needle for gasoline applications
- For center-hung fuel bowl carburetors
- Sold as a set of 10
These Genuine Holley Needles, Seats and Components are designed to replace worn, damaged or lost items to keep your carburetor operating perfectly!
Alcohol
Steel-tipped seat is required for use with alcohol or other fuels corrosive to rubber. All are adjustable and sold 2/pkg.
Gasoline/Marine
Viton-tipped needle resists dirt and conforms well to the seat for superior sealing. Most are adjustable and sold 1/pkg or 10/pkg (Gasoline only).
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Titanium
The lightweight, high strength titanium needle design is very responsive to changes in flow rate and has excellent sealing capabilities. The .150'' seat is capable of high flow rates. Adjustable, Sold 1/pkg.
Needle and Seat Hardware Kit/Gaskets
The hardware kit is for use with Holley externally adjustable needle seat assemblies. The Needle and Seat Gaskets are the same adjusting nut gasket and locking screw gasket included in the hardware kit but sold 10/pkg for the carburetor builder or track side spares.
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