Moroso 64923 Throttle Return Spring Kit - Holley Carbs 4500 series, Dual Carbs

Moroso 64923 Throttle Return Spring Kit - Holley Carbs 4500 series, Dual Carbs

  • $35.99
    Unit price per 


This is a Moroso Throttle Return Spring Kit for Holley 4500 series carbs and dual carbs

Part # 64923

It is a brand new, unopened, unused, product in its original packaging from the manufacturer as shown.

  • Clears most air cleaner combinations
  • Can be used with dual carburetors
  • Made from sturdy 14-gauge steel and finished in hand-polished chrome
  • Kit includes heavy and light sets of stainless steel return springs, all mounting hardware
Shipping will be free to the US only. Item will be shipped within one business day upon receiving payment for your purchase, and if in time, will be shipped the same business day. We process and ship orders daily through the five business days, sometimes within minutes of your order and usually within 24 hours of your order. We also respond to inquiries within a 24-hour period.


Heintz Sales, founded in 2016, is a locally owned small business e-commerce venture, looking to meet your online purchasing needs in automotive, sport and recreation, and general DIY home improvement projects. We carry a variety of products from more than 200 manufacturers, and have been expanding our product offerings daily.

Heintz Sales works in close partnership with Heintz Brothers Automotive, striving to meet the racing needs of oval track racers, drag racers, dirt track racers, NASCAR racers, and racers of any kind. Heintz Brothers for over 50 years has specialized in engine building, parts sales, and customer service in the racing industry. Our commitment to excellence and the business is shown by the induction of the Heintz Brothers, Steve and Mike, into the NC Drag Racing Hall of Fame. Heintz Brothers is located in Statesville, NC, and also works in partnership with Heintz Performance, located in Concord, NC, near the speedway.

We appreciate the opportunity to meet your performance racing needs and thank you for your support of our small business. We hope to have the opportunity to serve you in the future. Feel free to contact us with any questions.

Thank you!