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:
Most qualifying in-stock orders are processed within one business day. In the contiguous 48 states, eligible in-stock orders placed before 12:00 PM (noon) in the customer's local time zone typically ship the same business day. Orders shipping to Alaska or Hawaii use a 12:00 PM Pacific Time cutoff (California time). These cutoffs apply only to eligible in-stock orders and are not guaranteed shipping or delivery times. Same-day shipping refers to processing and carrier handoff, not delivery. Weekends and holidays are excluded.
Payment verification, address verification, fraud review, and inventory availability may take longer. Supplier-direct fulfillment, freight shipping, and special handling may also take longer.
Returns:
Eligible products may be returned within 60 days of delivery, subject to our Return Policy. Return authorization is required. Certain products are final sale or subject to manufacturer warranty procedures, shipping charges, and applicable restocking fees.
Please inspect your order promptly upon delivery. Shipping damage, incorrect items, missing components, or quantity shortages must be reported within 3 business days after delivery. Retain the product, original packaging, shipping labels, and photographs while your claim is reviewed.

