SHOP

All Mustang Parts
Free Shipping on qualifying orders over $99* Details

1986-04 Mustang UPR IAC Restrictor Plate 5.0/4.6 by UPR


1986-04 Mustang UPR IAC Restrictor Plate 5.0/4.6
1986-04 Mustang UPR IAC Restrictor Plate 5.0/4.6
***Restrictor Plate Orientation Reference Only***
1986-04 Mustang UPR IAC Restrictor Plate 5.0/4.6
1986-04 Mustang UPR IAC Restrictor Plate 5.0/4.6

Fix the annoying hanging idle on your 1986-2004 Mustang 5.0/4.6 with this UPR billet aluminum IAC restrictor plate.

Item #UPR-5010102
MPN# 5010-102

Everyday Low Price: $23.97

Low Stock Only 3 available.
 This item is returnable. Details
This item is not eligible for discounts or coupon codes.

Free Shipping over $99

 Add to Cart

× close
1986-04 Mustang UPR IAC Restrictor Plate 5.0/4.6
1986-04 Mustang UPR IAC Restrictor Plate 5.0/4.6
***Restrictor Plate Orientation Reference Only***
LMR showroom & will call pickup service will be closed beginning Monday 9/21/26 for renovations until further notice. Need help? Contact Us.

Made in the USA

 Benefits

  • Made in the USA!
  • Fixes Hanging Idle Issues
  • Easy 10 Minute Install

 Features

  • Billet Aluminum Construction
  • Precision Designed
  • Gaskets Included

 What's in the Box

  • (1) IAC Restrictor Plate
  • (2) Gaskets

1986-2004 Mustang UPR IAC Restrictor Plate - 5.0/4.6
Installing this UPR billet aluminum IAC restrictor plate will help fix the annoying hanging idle on your 1986-2004 Mustang 5.0/4.6. If you have experienced the annoying hanging idle after startup, between shifts, or when just revving up your Mustang, it may not be the idle air control (IAC) valve. A common cure for this is restricting the amount of air entering the IAC valve; a UPR restrictor plate may be just what you need. This simple plate goes between the intake and the IAC Valve and limits the amount of air, reducing the time to idle hangs. Made from billet aluminum, this plate has the correct IAC shape and mounting holes to be a perfect fit. Precision-machined to allow just the right amount of air without affecting drivability or normal idling. Best of all, it easily installs in minutes and does not affect factory emissions equipment.

Installation Note
  • The smaller hole goes towards the driver's side of the throttle body or inlet elbow.


UPR Warranty - Click Here

  • Ford Mustang - 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
  • Engines: 5.0, 4.6

California Residents:
Prop 65 Warning SignWARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

About This Brand


UPR

In 1989, Mark Mainiero and his son Joe started UPR Products with Mustangs in mind. With the help of their employees Jeremy Martorella and Bart Tobener, they brought in more racing victories and records than any other shop of that time. In 1998, Joe recognized the need for a company that fully understood the Mustang racer's suspension needs. While making customer service his main priority, he strived to offer the strongest, lightest, and highest quality parts at an affordable price. A firm believer in the “keep it simple” philosophy Joe made sure all his components could be easily installed and adjusted. Shop UPR for high quality Mustang performance and dress up components.

Add to Cart