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OPR Radiator Coolant Cap with Sensor (90-93 All)

Item 100537
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$74.99 (each)

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      Product Information

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


      • Direct Fit Replacement
      • Radiator Cap with Low Coolant Sensor
      • Raised Yellow Lettering
      • Fits 1990-1993 Mustangs


      Restoration. If you are rebuilding or restoring your Foxbody back to better than new condition don't forget to replace your old Radiator Overflow Tank Cap with a brand new one from OPR.

      Low Coolant Sensor. This OPR Radiator Overflow Tank Cap includes the low coolant sensor making it perfect for replacing your old malfunctioning unit.

      OEM Quality. Manufactured from high quality plastic material to OEM specs this OPR Radiator Overflow Tank Cap features raised yellow lettering just like the original.

      Application. This OPR Radiator Cap with low coolant sensor is a direct fit replacement for 1990 to 1993 Mustangs, including the LX 5.0, GT and SVT Cobra models.


      Fitment: 1990 1991 1992 1993 Details

      MPN# 100537

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (8)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 8 customers

      • March 06, 2020

        5 1991 GT - WHTPONY

        Excellent product

        Replaced original perfectly, no more light on. Can't notice any difference

        Helpful (0)
      • February 04, 2020

        4 1993 GT - PeterParker

        Low wallet is better than low coolant...

        It works and everything but it sure isn’t made by Motorcraft. I had to fine tune some of the casting imperfections to get the square plastic cover to stay in place and if it were a little cheaper i wouldnt have said anything. Basically, it’s on the car and working.

        Helpful (0)
      • November 14, 2018

        5 1990 GT - ChristopherW


        Jeffery Hyundai. Mourn. Fab. No bf. Kk. . C. Mnhvdghjj

        Helpful (9)
      • September 08, 2016

        5 1991 Other - pcdoc72

        very sweet

        awesome replacement for my 25 year old Radiator Coolant Cap w/ Sensor.

        Helpful (12)
      • June 12, 2015

        5 1993 GT - Redline

        Works great . Fast shipping

        Old sensor was original tothe car (1993) and turing on the low coolant light even when tank was full. New sensor and all is right now.

        Helpful (13)
      • May 29, 2015

        5 1988 GT - tvanwinklehome

        Great Addition/Replacement

        I purchased this cap for the Moroso aluminum overflow tank for my 88, still need to modify the harness to work but is what's needed to make it work on my year. Good product, fast shipping as always.

        Helpful (13)
      • January 16, 2015

        4 1991 Other - ASquared

        Rad Cap with Sensor

        Perfect swap for factory unit. Plugs right into factory harness. Old unit had my low coolant light showing in the dash. This solved my problem. Product arrived quickly.

        Helpful (12)
      • March 21, 2014

        5 1991 GT - curtis51

        Radiator coolant cap w/ sensor

        The cap came and looks identical to the stock cap and sensor works great at a great price.

        Helpful (12)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      Do they make it for 87-89 foxbody

      • At this time the Radiator Coolant Cap with the Sensor is for 90-93 Mustang models only.

      Helpful (1)

      Will this cap/sensor fit the Moroso replacement expansion tank?

      • yes, this cap/sensor is compatible with the Moroso replacementtank.

      Helpful (0)

      Hello, Why don't fit on Mustang 94-95? The sensor looks like. Thank you! Regards.

      • The Radiator Coolant Cap w/ Sensor is going to be calibrated and designed to work with the 1990 to 1993 Mustang and will not be compatible with the 1994 or 1995 models.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Radiator Overflow Cap with sensor

      Tech Specs

      Will It Fit My Mustang

      • Cobra - 93
      • Cobra R - 93
      • GT - 90, 91, 92, 93
      • LX - 90, 91, 92, 93

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