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Ford Performance Stage 8 Header Bolts - 3/4 in. (79-95 5.0L)

Item 50581
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    Features & Details

    • Locking Header Bolts
    • Grade 8 Steel Construction
    • Duplex Nickel Plated
    • Hex Head Design
    • Size - 3/8-16 X .75"
    • Made in the USA
    • Sold as a Set of 16
    • Fits 1979-1995 5.0L V8 Mustangs
    Locking Bolts. Securely mount your Mustangs manifolds or aftermarket headers by replacing that old weak stock hardware with high strength Stage 8 Locking Header Bolts. These Ford Racing Header fasteners will absolutely, positively not back out. Eliminates need to monitor and tighten bolts regularly.

    Ford Racing Quality. Made in the USA from specially-engineered Grade 8 carbon alloy steel that features a duplex nickel plated finish to resist corrosion, these Ford Racing Header Bolts are hardened to a tensile strength of 150,000 psi to provide superior strength for long-lasting performance.

    Application. These Ford Racing Stage 8 Header Bolts are designed for use on 1979 to 1995 Ford Mustang equipped with the 5.0L small block V8 engine, including the LX 5.0, GT and SVT Cobra models.

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 Details

    MPN# M-9432-A50

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (16) Bolts
    • (16) Washers
    Installation Info
    Tech Specs
    • Thread Size: 3/8-16 in
    • Head Style: Hex
    • Length: 3/4 in
    • Fastener Material: Grade 8 aircraft steel
    • Fastener Finish: Duplex nickel plated
    Will it fit my Mustang?

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          Customer Reviews (9) Write a Review

          Overall Rating 4.6

          out of 5 stars

          • 5/5

            April 04, 2018

            Works Great

            This is my second set. My first set I put on my F150 and have had them on for 2yrs with out any issues. Now I installed my second set on my mustang. Easy to put on and work great.


            Year: 1984 Submodel: Other

            Helpful (12)

          • 5/5

            March 16, 2018

            The perfect header bolts

            They are the best way to keep your header from leaking no need to keep retightining them they stay locked in place


            Year: 1994 Submodel: GT

            Helpful (12)

          • 5/5

            June 12, 2017


            For what they are, the job is a bit of a pain. Either way, I needed them, and ultimately they really are worth it.


            Year: 1990 Submodel: LX

            Helpful (13)

          • 5/5

            July 27, 2016

            Stage 8 header bolts

            These were awesome will not use diff header bolts!!!!


            Year: 1991 Submodel: GT

            Helpful (13)

          • 1/5

            October 03, 2014

            The Ford Racing Header Bolts did not work for me.

            Don't know that it was the header bolts' fault. The bolt holes on the Ford Racing Shorty Headers were so close to 3 ports (2 on the passenger side and one on driver side) that I could not get the threads started on a total of 5 bolts. 2 other mechanics tried to get these bolts started without any luck either. There was no consideration for the oil dip stick brace either. So, I used the header bolts that came with the FR headers and the OEM header bolt that kept the dip stick brace. A.M. was great on delivery, only 2 days after order with standard shipping. Just wish these bolts would have worked.


            Year: 1990 Submodel: GT Fayetteville, GA, USA

            Helpful (17)

          • 5/5

            September 19, 2014

            never tighten header bolts again

            Easy to install and no more loose or lost header bolts


            Year: 1995 Submodel: GT Spring Hill Florida

            Helpful (15)

          • 5/5

            August 22, 2014

            stage 8 bolts

            Awesome header bolts! Super strong and will not back out. With the locking technology on these bolts it is virtually impossible for them to come loose. So that means no header leaks! Great product! Thanks.


            Year: 1997 Submodel: GT Tennessee, USA

            Helpful (13)

          • 5/5

            June 20, 2014

            Awsome locks!!!

            I won't find another empty hole where a bolt use to be. I had 2 factory bolts back out completely on my stang, after some time passed. I had a leak which became annoying. I installed these locking bolts. The leak is gone and I don't have to worry about it anymore. I highly recommend this product.


            Year: 1995 Submodel: GT Hamden, CT, USA

            Helpful (14)

          • 5/5

            June 20, 2014

            good replacement

            very nice replacement when needing new bolts. would recommend.


            Year: 1991 Submodel: GT

            Helpful (14)

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