6-504 Holley Needle & Seat.110
6-504 Holley Needle & Seat.110
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6-504 Holley Needle & Seat.110
Upgrade your carburetor with the 6-504 Holley Needle & Seat.110 for enhanced performance and precise fuel flow control. This high-quality component is designed to take your engine's efficiency to the next level.
Key Features:
- High Flow Design: Facilitates efficient fuel flow, ensuring optimal engine performance.
- Adjustable: The needle and seat assembly can be easily adjusted to fit your specific carburetor application, CFM size, and fuel bowl type.
- Viton® Needle: Features a Viton® tipped needle that is dirt-resistant and provides excellent sealing by conforming perfectly to the shape of the seat.
- Compatibility: Designed to be compatible with most Holley Performance Carburetors, making it a versatile upgrade.
- Durable Material: Constructed with durable Viton for longevity and reliability in various conditions.
- Hardware Included: Comes with all necessary hardware for quick and hassle-free installation.
- Warranty: Enjoy peace of mind with a limited 90-day warranty for your purchase.
Elevate your carburetor's performance and fuel management with the 6-504 Holley Needle & Seat.110. Whether you need to increase or decrease fuel flow at a certain pressure, this needle and seat assembly provides the versatility and durability required to meet your engine's demands.
Shipping & Returns
Shipping & Returns
📦 Shipping:
Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days, depending on your location.
↩️ Returns:
You may return or exchange products within 60 days of receiving your order. Items must be in original condition with proof of purchase. If your item is defective or damaged due to manufacturing issues, we’ll replace it at no additional cost.

