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MAC 1-5/8 in. Ceramic Unequal Length Shorty Headers for GT-40P Heads (94-95 5.0L)

Item 100521
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Market Price $486.98 You Save 12% ($56.03)
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$430.95 (pair)

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      Product Information

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


      • Increases Horsepower and Torque
      • Shorty Unequal Length Header Design
      • Free Flowing 1-5/8" Mandrel-Bent Tubing
      • 16 Gauge Steel Construction
      • Polished Ceramic Finish
      • Fits 1994-1995 5.0L V8 Mustangs with "GT-40P" Heads


      More Horsepower And Torque. Replace those restrictive factory manifolds with a set of MAC Shorty Headers to improve your mustangs exhaust flow and increase your Pony's horsepower and torque.

      Unequal Length Design. These MAC Performance Headers feature a shorty, unequal length design that in addition to making more power also cleans up your engine bay for a show-winning look.

      Ceramic Coating. These Headers are completed in MAC's Polished Ceramic Coating that not only looks great, but reduce under hood temperatures to help increase horsepower and extend the life of the headers. Ceramic Coated headers will long out last both chrome plated and polished headers.

      High Quality Construction. Constructed from 1-5/8" mandrel bent 16 gauge steel tubing so there are no kinks to rob you of power, these MAC Performance Headers feature 2-1/2" True Fit Collectors that eliminate the need for gaskets which are prone to leak and blow out. These headers are then completed in a polished ceramic finish for good looks and a durable long life.

      Application. These MAC Shorty Unequal Length Header are designed to fit the 1994-1995 5.0L V8 Mustangs, including GT and SVT Cobra with production and new angled spark plug 5.0L GT-40 “P” cylinder heads.

      Fitment: 1994 1995 Details

      MPN# 54158

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (2)

      Write a Review

      Ratings Summary

      2.5 out of 5 overall rating from 2 customers

      Installation Time: Afternoon

      • April 18, 2018

        3 1995 GT - JaredB Installation Time: Afternoon

        Good fit around plugs

        Really nice coating and good quality. The #2 cylinder flange was tweaked and took a little persuasion to get it to seal. The bad part is the persuasion caused obvious damage. Was impressed until they didn't fit right. Now that side is a bit of an eyesore. Hardest part was getting a wrench on the bolts

        Helpful (6)
      • June 03, 2017

        2 1994 GT - Mustang4fun Installation Time: Less than 1 Hour

        Poor workmanship

        When the headers arrived I inspected them right away and was disappointed with the workmanship. There were 2 spots that I could see right through the welds. I had to get my welder and fill in the holes before installing. No grinding is done after they weld so a great deal of flow is restricted at the collection of the 4 tubes. A good point is that they fit well on the GT40P heads.

        Helpful (6)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      Im thinking of buying gt40p cylinder heads for my 79 5.0 302 will this headers fit my vehicle?

      • Hello! The MAC Ceramic Unequal Length Shorty Headers for GT-40P Headswill only fit 94-95 mustangs. you will need:

      Helpful (0)

      Will these fit gt40x heads?

      • The MAC Ceramic Unequal Length Shorty Headers for GT-40P Heads are specifically designed 1994-1995 5.0L V8 Mustangs with "GT-40P" Heads only.

      Helpful (0)

      Will these fit GT40x Heads? I don't know if the p and x heads are the same so i am looking for some wisdom

      • I read somewhere that these will only fit "GT40p" heads, so I called Mac to verify and they said yes these headers were designed specifically for the "p" head and they can't guarantee fitment on any other head.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Driver side header
      • (1) Passenger side header
      • (2) Copper Gaskets
      • (16) Header Bolts
      • (4) Threaded Bolts and Nuts
      • Bracket and Hardware

      Tech Specs

      Header Specifications
      Header Type:Short Tube Finish :Ceramic Coating
      Type Mid Pipe Required:StandardFitment:1994-1995 5.0 V8 Mustangs with GT-40P Heads

      Will It Fit My Mustang

      • Cobra - 94, 95
      • GT - 94, 95