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Ford Heater Tube Nipple (99-04 GT)

Item 383868
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      Product Information

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


      • Heater Tube "Nipple" Fitting
      • Original Factory Equipment - OE Fit and Finish
      • Genuine Ford OEM Part - F75z8555aa
      • Metal Construction
      • (2) O-Rings Included
      • Fits 1999 to 2004 GT and Bullitt Mustangs
      • Required for PI Intake Install on 96-98 GT


      Direct Fit Replacement. Replace that old split or seeping Heater Tube "Nipple" Fitting on your New Edge GT Mustangs 4.6L V8 with a brand new genuine Ford replacement part for leak free performance.

      Required For PI Intake Swap. This Heater Tube Fitting is one of the parts that is required when installing a PI (Performance Improved) intake manifold on a 1996-1998 GT.

      Genuine Ford Part. Manufactured to the original factory specifications from OEM quality steel, this genuine Ford Heater Tube Fitting includes two O-rings to ensure a perfect fit and reliable leak-free operation. Genuine Ford OEM part - f75z8555aa.

      Application. This Genuine Ford Heater Tube "Nipple" Fitting is specifically designed to be a direct fit replacement for the 1999 to 2004 GT and Bullitt Mustangs equipped with the 4.6L 2V SOHC Modular Engine. Sold individually.

      Fitment: 1999 2000 2001 2002 2003 2004 Details

      MPN# F75Z-8555-AA

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (17)

      Write a Review

      Ratings Summary

      4.1 out of 5 overall rating from 17 customers

      • March 11, 2019

        5 1998 GT - Becky400

        Amazing quality

        Very good quality for what it’s for.. Fits perfectly in my 98 gt sohc engine.

        Helpful (0)
      • November 17, 2018

        5 1997 GT - FranciscoD

        Great for

        Another great product fit perfect thanks am for great products

        Helpful (7)
      • October 13, 2018

        4 2000 GT - JohnW

        Need it for PI intake swap

        PI tube for water pump. One of the small parts most of us didn't or couldn't salvage from the junk yard.

        Helpful (7)
      • June 04, 2018

        5 2000 GT - EddieT


        If you putting a pi intake manifold on your non pi motor definitely something your going to need and installation was supper easy. Taking the old one out was alittle time consuming but used a Dremel tool to grind away at one side and make a valley then just hit it with a hammer to knock it out.

        Helpful (11)
      • February 02, 2018

        5 1996 GT - AidanM

        Works as advertised

        Nothing much to say. High quality production and easy installation. All around solid product.

        Helpful (11)
      • November 09, 2017

        5 1993 Other - Miguel

        Great product

        Fast shipping perfect fit don't own a mustang but own a Lincoln with a 4.6 and one with a 5.0 so definitely will be ordering from American muscle again

        Helpful (12)
      • October 21, 2017

        1 2002 GT - Ethan

        didnt fix it

        it just cracked the pipe on my intake manifold, i just had to replace the whole thing eventhough its a common problem

        Helpful (12)
      • September 16, 2017

        5 1998 GT - AnthonyD


        Good fit, came pretty quickly. Thanx so order it today if needed.

        Helpful (11)
      • August 18, 2017

        5 2013 GT - ghig13

        Worked great

        Had a rotted fitting onna cooling valley tube for a 2009 police interceptor crown vic. This piece fit nicely and easily in the stock location. Remove the water pump, and the fitting is right there. Runs through the block. Remove the old fiting, slide the new one in until it is flush with the block, and reinstall t he water pump. Very easy job, fixed my leak without issue.

        Helpful (11)
      • March 24, 2017

        5 1998 GT - MichaelS

        Perfect fit

        Works great for my PI swap. Fits great and gets the job done

        Helpful (13)

      Questions & Answers (4 answers)

      4 Top Rated Questions

      Is this the heater core tube nipple that is located on the right side of the intake manifold which is press fitted into the manifold itself

      • This would be the nipple you described.

      Helpful (2)

      How to do you remove old one and install it? mine completely broke in half and released all my coolant.

      Are they a video to watch to see how to change it

      Are you sure this doesnt fit an 03 Mach 1?

      • Sorry, this does not have fitment for a Mach 1.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Heater Tube "Nipple" Fitting

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 01
      • GT - 99, 00, 01, 02, 03, 04

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