Description

Diaphragm Cover – Secondary – Quick Change – Plastic – Black – Holley Carburetors – Kit

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 Quick Change Secondary Spring Kit 20-59”

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

    PERTRONIX IGNITION Ford HEI External Coil D3003

    SKU: PRTD3003
    Product information
    • Weight2.09 lbs
    • Dimensions6.45 × 6.35 × 4.9 in
    • Product Line

      Flame Thrower

    • Quantity

      Each

    • Coil Location

      Remote

    • Coil Style

      E-Core

    • Max Voltage

      50000V

    Details...
    Original price was: $101.00.Current price is: $91.65.Add to cart
    Original price was: $101.00.Current price is: $91.65.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    PYPES PERFORMANCE EXHAUST Stack Clamp 8in Stainless HSC008

    SKU: PYPHSC008
    Product information
    • Weight1.03 lbs
    • Dimensions11.5 × 9.5 × 1.5 in
    • Material

      Stainless

    • Color

      Polished

    • Finish

      Polished

    • Quantity

      Each

    • Variant

      Yes

    Details...
    Original price was: $42.95.Current price is: $35.79.Add to cart
    Original price was: $42.95.Current price is: $35.79.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    ROLLMASTER-ROMAC BBC Billet Roller Timing Set w/Shim CS2000

    SKU: ROLCS2000
    Product information
    • Weight3.7 lbs
    • Dimensions10.2 × 6.9 × 1.5 in
    • Quantity

      Kit

    • Product Line

      Red Series

    • Chain Included

      Yes

    • Chain A Style

      Roller

    • Chain A Rows

      Double

    Details...
    Original price was: $162.00.Current price is: $146.37.Add to cart
    Original price was: $162.00.Current price is: $146.37.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    RACEQUIP Tow Loop with Soft Loop Ring 898148RQP

    SKU: RQP898148
    Product information
    • Weight0.655 lbs
    • Dimensions8.9 × 5.6 × 2.3 in
    • Color

      Red

    • Quantity

      Each

    • Variant

      Yes

    • Variant Group

      Tow Straps and Components7

    • Variant Column

      End 2 Style

    Details...
    Original price was: $32.00.Current price is: $29.00.Add to cart
    Original price was: $32.00.Current price is: $29.00.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    SKYJACKER HYDRO SHOCK W/RED BOOT H7061

    SKU: SKYH7061
    Product information
    • Weight6.59 lbs
    • Dimensions24.75 × 3.35 × 3 in
    • Product Line

      Hydro H7000 Series

    • Internal Design

      Twintube

    • Gas/Hydraulic

      Hydraulic

    • Compressed Length

      12.42 in

    • Extended Length

      30.46 in

    Details...
    Original price was: $58.00.Current price is: $51.87.Add to cart
    Original price was: $58.00.Current price is: $51.87.
    Quantity Only 6 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    KC HILITES Ditch Light Brackets 7337

    SKU: KCH7337
    Product information
    • Weight1.85 lbs
    • Dimensions8 × 5.5 × 5.5 in
    • Material

      Steel

    • Color

      Black

    • Finish

      Powder Coat

    • Quantity

      Pair

    • Mounting Style

      Bolt-On

    Details...
    Original price was: $149.00.Current price is: $134.99.Add to cart
    Original price was: $149.00.Current price is: $134.99.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    STILO ST5 Visor Dark Smoke YA0802

    SKU: STIYA0802
    Product information
    • Weight0.355 lbs
    • Dimensions12.5 × 8.2 × 4.65 in
    • Bag Included

      Yes

    • Color

      Dark Smoke

    • Quantity

      Each

    • Variant

      Yes

    • Variant Group

      HelmetShields14

    Details...
    Original price was: $179.00.Current price is: $161.95.Add to cart
    Original price was: $179.00.Current price is: $161.95.
    Quantity Only 5 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    JMS TractionMax – Traction Control Device Plug&Play TX1114DCX

    SKU: JMSTX1114DCX
    Product information
    • Weight0.85 lbs
    • Dimensions8.7 × 6.2 × 2.6 in
    • Product Line

      TractionMAX

    • Wiring Harness Included

      Yes

    • Quantity

      Each

    • Traction Lockout

      Yes

    • On-The-Fly Tuning

      Yes

    Details...
    Original price was: $494.73.Current price is: $449.75.Add to cart
    Original price was: $494.73.Current price is: $449.75.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    U-B MACHINE GN Spring Cup 35-1001

    SKU: UBM35-1001
    Product information
    • Weight5.47 lbs
    • Dimensions6.35 × 6.3 × 6.25 in
    • Material

      Steel

    • Color

      Natural

    • Finish

      Natural

    • Quantity

      Each

    • Style

      Cup

    Details...
    Original price was: $55.79.Current price is: $50.72.Add to cart
    Original price was: $55.79.Current price is: $50.72.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HOWE Dust Boot For 33658 33771

    SKU: HOW33771
    Product information
    • Weight0.05 lbs
    • Dimensions3.9 × 3.55 × 0.55 in
    • Outside Diameter

      3.154 in

    • Inside Diameter

      1.957 in

    • Material

      Rubber

    • Color

      Black

    • Finish

      Natural

    Details...
    Original price was: $6.02.Current price is: $5.47.Add to cart
    Original price was: $6.02.Current price is: $5.47.Add to wishlist

    87