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OPR Upper and Lower Radiator Bracket Insulators (79-93 All)

Item 12727
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Perfect for Restoration or Squeaks
      • EPDM Rubber Construction
      • OEM Fit and Finish
      • Sold as a Set of Four, Two Upper and Two Lower
      • Fits 1979-1993 Mustangs


      Perfect For Restoration. Now you can restore your Foxbody Mustang back to it's original showroom condition by replacing those dry rotted and deteriorated Upper Radiator Insulators. This is not an item you want to over look when installing a new radiator in your pony.

      OEM Quality. Made to the original factory specifications from durable EPDM rubber, these OPR replacement upper and lower radiator bracket insulators are perfect for a high quality restoration. Conveniently marked with a white stripe for right side designation. Application. This OPR set of two upper and two lower radiator insulators are specifically designed for use on the 1979 to 1993 5.0L Mustangs, including the LX 5.0, GT and SVT Cobra.


      Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 Details

      MPN# 12727

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (15)

      Write a Review

      Ratings Summary

      4.7 out of 5 overall rating from 15 customers

      • January 05, 2019

        5 1989 GT - RickM

        Rubber Bracket

        The upper rubber brackets worked perfect. The bottom insulators needed modifications but ultimately also worked out for my needs The insulators help support an enlarged radiator ( 3-rolls) for cooling a 1989 5.0L installed into a 1965 Mustang.

        Helpful (3)
      • September 15, 2018

        5 1991 GT - CurtisF

        Ontario, Canada

        Arrived quickly, as ordered. Easy to use site, will use again

        Helpful (9)
      • March 31, 2018

        5 1989 GT - ThomasK

        No Different Than Stock

        I checked these side by side with my originals and couldn't tell them apart. Fit an function is exactly like OEM. IF you're already swapping the radiator don't just reuse the 30 year old insulators. These are inexpensive and fit great.

        Helpful (10)
      • January 07, 2018

        5 1990 GT - TravisB

        Great product

        It sgipped fast an was exactpy wut i needed would recommend

        Helpful (10)
      • December 18, 2017

        5 1992 LX - David

        David's Stang

        These insulators are amazing, there are the perfect addition to my brand new radiators and dual fan installation. everything fit correctly and there was no down time.

        Helpful (10)
      • July 07, 2016

        5 1989 Other - cabby

        Radiator support rubbers

        They're exactly the same fit as the old rubbers. They hook in so there's no movement when installing the radiator. They fit perfect.

        Helpful (11)
      • February 15, 2016

        5 1983 GT - Gugs

        Radiator rubber

        Very nice part easy to install holds radiator thigh in place an makes it look finished

        Helpful (11)
      • August 27, 2015

        5 1988 Other - BossHoss

        Good mounts

        Well worth putting on these new insulators when I swapped out the old radiator. ..good fit...

        Helpful (12)
      • March 11, 2014

        4 1988 Other - cyclejuice

        nice product

        the reason i didn't give this 5 stars is that I didn't have the originals in, the car the previous owner took them out , when i got the new ones they have to go in a certain way ant there was not a diagram so it took a few tries to get it right

        Helpful (9)
      • September 26, 2013

        4 1993 GT - JW1969

        Good but needed modifcation.

        I bought these to go with my new radiator. The only catch was I had to modify the bottom insulators because I purchased an aftermarket radiator. I had to trim a portion of the bottom insulators to make them flat all the way across. This is so my radiator would not sit too high, in order to give the fan enough clearance to keep from contacting the bottom of the fan shroud. Once I trimmed off the excess sections, the radiator fit perfectly giving the fan enough clearance from the shroud.

        Helpful (11)

      Questions & Answers (1 answers)

      1 Top Rated Question

      What exactly does it mean right side designation? the right side ,meaning passenger side and does it matter where the thicker and thinner end goes? sorry very confusing. thanks

      • These will come with a white stripe so that you are able to designate the passenger from the drivers side.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Upper Radiator Bracket Insulators
      • (2) Lower Radiator Bracket Insulators

      Tech Specs

      Will It Fit My Mustang

      • GT - 87, 88, 89, 90, 91, 92, 93
      • LX - 87, 88, 89, 90, 91, 92, 93
      • Other - 79, 80, 81, 82, 83, 84, 85, 86

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