Description

Needle and Seat – Adjustable – 0.110 Orifice – Viton – Holley Carburetors – Each

Why Choose Us?



Frequently Asked Questions​

As an Authorized Automotive Retailer in the United States, we take pride in guaranteeing 100% authentic products from all brands available on our website. With partnerships spanning 1,000+ brands and a network of 20+ distributor warehouses nationwide, we maintain millions of auto parts in inventory across the USA, ensuring quick shipping and reliable service to our customers. When you shop with us, you're investing in quality and trust.
We believe we have the fastest backorder system in the U.S. auto parts industry, thanks to our strong partnerships with brands and vendors. Nearly all backordered auto parts are shipped directly by the vendors without any additional delays, or they are placed as special orders on the same day. In most cases, backordered parts are delivered within 5-10 days.
We offer unbeatable prices and the best shipping rates on auto parts, with exclusive protection and insurance included to safeguard your order from damage or loss. Enjoy convenient door-to-door delivery, real-time tracking, and our 100% satisfaction guarantee for a smooth, worry-free experience.
Our standard shipping typically takes 1-3 business days. We will provide estimated shipping time for each product. While we aim to deliver as quickly as possible, this timeframe ensures all orders are processed, prepared, and dispatched with care. If the products are not ready for shipping in 72 hours, we will refund you 100%
Absolutely. Once your order is dispatched, you’ll receive an email with tracking details, so you can follow your shipment every step of the way. Every step of shipping process will be sent through email notifications or using tracking page.
Every product page includes a stock level indicator to show what’s available. We always update the inventory 24/24. We’ll be happy to check availability and provide updates on new stock arrivals if you need a help.
We’re sorry to hear that your order wasn’t delivered in perfect condition. Please email us with your order number, a description of the issue, and photographs of the damaged item. Once we receive this information, we’ll arrange for a replacement or refund and handle the return process.
You can return items within 30 days of receipt. Ensure the product is new in its original packaging and securely wrapped for safe transit. Once we receive the item in sellable condition, we’ll issue a full refund for the product value. Contact us for the return address and further instructions.

About HOLLEY

A leader in fuel systems for over 100 years, Holley fuel management systems have powered top circle track and drag racing teams around the world. Now, Holley offers EFI systems for GM's LS engine, among many other applications. Holley's products also include performance fuel pumps, intake manifolds, and engine accessories products for street performance, race, and marine applications.

Reviews

There are no reviews yet.

Be the first to review “HOLLEY Needle & Seat 6-504”

Your email address will not be published. Required fields are marked *

Recently viewed products

  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    QUICK FUEL TECHNOLOGY E-85 Fuel Sample Test Tube Kit 36-E85QFT

    SKU: QFT36-E85
    Product information
    Details...
    Original price was: $44.00.Current price is: $39.13.Add to cart
    Original price was: $44.00.Current price is: $39.13.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MSD IGNITION Ford 8.5mm Plug Wire Set 31259

    SKU: MSD31259
    Product information
    • Weight1.369 lbs
    • Dimensions11.05 × 10.1 × 2.85 in
    • Product Line

      Super Conductor

    • Quantity

      Kit

    • Assembled

      Yes

    • Rfi Supression

      Yes

    • Conductor Style

      Spiral Core

    Details...
    Original price was: $132.00.Current price is: $119.95.Add to cart
    Original price was: $132.00.Current price is: $119.95.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MSD IGNITION Wire Harness LS 58x/4x Front Cam Sensor 2278

    SKU: MSD2278
    Product information
    • Weight0.335 lbs
    • Dimensions7.9 × 6.05 × 2.25 in
    • Quantity

      Each

    • Harness End 1

      MSD 6LS Ignition Box

    • Harness End 2

      Cam Sensor Plug

    • Harness Purpose

      Adapter

    • Loom / Sleeve Included

      Yes

    Details...
    Original price was: $60.00.Current price is: $54.05.Add to cart
    Original price was: $60.00.Current price is: $54.05.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    QUARTER MASTER Shim Kit 720102

    SKU: QTR720102
    Product information
    • Weight0.45 lbs
    • Dimensions5.35 × 4.25 × 1.8 in
    • Quantity

      Kit

    • Product Line

      721 Series

    • Component

      Shim Kit

    • Inside Diameter

      1.390 in

    • Outside Diameter

      1.980 in

    Details...
    Original price was: $28.00.Current price is: $25.24.Add to cart
    Original price was: $28.00.Current price is: $25.24.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    RATECH Basic Kit GM 7.5in & 7.625in 408K

    SKU: RAT408K
    Product information
    • Weight0.645 lbs
    • Dimensions6.85 × 6.8 × 3.85 in
    • Product Line

      Basic Kit

    • Quantity

      Kit

    • Pinion Depth Shims Included

      Yes

    • Crush Sleeve Included

      Yes

    • Cover Gasket Included

      Yes

    Details...
    Original price was: $20.42.Current price is: $18.56.Add to cart
    Original price was: $20.42.Current price is: $18.56.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    ISKY CAMS SBC Solid Camshaft 201546

    SKU: ISK201546
    Product information
    • Weight8.5 lbs
    • Dimensions24.5 × 2.5 × 2.5 in
    • Product Line

      OVAL TRACK

    • Camshaft Lifter Style

      Mechanical Flat Tappet

    • Advertised Intake Duration

      278.0

    • Intake Duration At 0.050 In

      250.0

    • Advertised Exhaust Duration

      282.0

    Details...
    Original price was: $343.96.Current price is: $312.69.Add to cart
    Original price was: $343.96.Current price is: $312.69.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    TRIPLE X RACE COMPONENTS #3 Bulkhead Nut HF-72003BLK

    SKU: TXRHF-72003-BLK
    Product information
    • Weight0.005 lbs
    • Dimensions3.05 × 1.95 × 0.3 in
    • Head Style

      Hex

    • Material

      Aluminum

    • Color

      Black

    • Finish

      Anodized

    • Quantity

      Each

    Details...
    Original price was: $4.00.Current price is: $3.29.Add to cart
    Original price was: $4.00.Current price is: $3.29.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WINTERS Thrust Washer .082in Thick 68842

    SKU: WIN68842
    Product information
    Details...
    Original price was: $4.80.Current price is: $4.36.Add to cart
    Original price was: $4.80.Current price is: $4.36.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    ENDERLE BBC Front Drive Cover 5004
    Add to wishlist

    ENDERLE BBC Front Drive Cover 5004

    SKU: END5004
    Product information
    • Weight3.27 lbs
    • Dimensions13.35 × 12.45 × 3.25 in
    • Material

      Aluminum

    • Color

      Natural

    • Finish

      Natural

    • Quantity

      Each

    • 1-Piece / 2-Piece

      1-Piece

    Details...
    Original price was: $221.58.Current price is: $201.44.Add to cart
    Original price was: $221.58.Current price is: $201.44.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    EDGE PRODUCTS Programmer - Evolution CTS3 Ram - Diesel 85400-300
    Add to wishlist

    EDGE PRODUCTS Programmer – Evolution CTS3 Ram – Diesel 85400-300

    SKU: EDG85400-300
    Product information
    • Weight1.45 lbs
    • Dimensions9.5 × 6.4 × 3.6 in
    • Quantity

      Each

    • Product Line

      Evolution CTS3

    • Speedometer Recalibration

      Yes

    • Performance Tuning

      Yes

    • Economy Tuning

      Yes

    Details...
    Original price was: $825.00.Current price is: $749.95.Add to cart
    Original price was: $825.00.Current price is: $749.95.
    Quantity Only 7 left in stock!
    -+
    Add to cart
    Add to wishlist

    112