Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Mustang! Enter Daily

BBK Phenolic Spacer Kit for GT-40/Cobra Intake Manifolds (86-93 5.0L)

Item 56105
Market Price $90.39 You Save 12% ($10.40)
Our Price


FREE Shipping

Will this fit your Vehicle?

Change Vehicle Help?
In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features & Details

    • Reduce Heat Transference
    • Custom Phenolic Fiber Material
    • BBK Designed & Dyno Tested
    • 3/8" Thick
    • Fits 86 to 93 5.0L w/ GT40 or Cobra Intake
    Reduce Heat. The BBK GT-40 Intake Manifold Phenolic Spacer Kit is designed to reduce heat transference between the the upper and lower intake manifold to lower inlet air temperature to increase horsepower and allow for increased timing with less detonation.

    Quality Materials. CNC machined from a Custom Phenolic Fiber Material this Intake Manifold Spacer kit has been designed & dyno tested by BBK to ensure maximum performance.

    Application. This 3/8" BBK GT-40 Intake Manifold Phenolic Spacer Kit is specifically designed for use on the 1986 to 1993 5.0L Mustang with the GT-40 or Cobra intake manifold installed.

    Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details

    MPN# 1506

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) One Spacer
    • (2) Gaskets
    • (2) Two bolts long
    • (4) Four bolts small
    • (6) Six washers
    Installation Info
    Tech Specs
    Will it fit my Mustang?

      Customer Photos (4) Submit Your Photo

      View All 4 Photos

        Questions & Answers (6)

        5 Top Rated Questions

        What is the port diameter? Thanks in advance

        • The BBK Phenolic Spacer Kit will have ports the same diameter as the GT40/Cobra intakes. At this time we do not have an exact measurement of this diameter.

        Helpful (0)

        the gt40 cobra intake has 4 long bolts that secure it to the lower.. do you sell all the bolts needed to install .. cause your picture and description shows only 2 long bolts included.. when there is 4 thats needed

        • The BBK Phenolic Spacer Kit will not include additional long bolts. At this time we do not carry these separately.

        Helpful (0)

        Hello. Will this work on a tubular GT-40 intake? Thank you!

        • The BBK Phenolic Spacer Kit will work with Tubular GT40 Intakes, though the bolts may not be correct for this application.

        Helpful (0)

        Will the bolts work with a explorer gt40 intake?

        • Hello! We can only guarantee the BBK Phenolic Spacer Kit for GT-40/Cobra Intake Manifolds will fit 1986 to 1993 5.0L Mustang with the GT-40 or Cobra intake manifold.

        Helpful (0)

        does it fit a gt 40 tubular intake gt 40 tubular intake off lighting

        • Yes, the BBK Phenolic Spacer Kit for GT-40/Cobra Intake Manifolds (86-93 5.0L) works for GT-40 intakes.

        Helpful (0)
        Post Your Question
        1 More Question
        will this work on a gt 40 tubular intake ? 1 answer

          Customer Reviews (12) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Less than 1 Hour

          • Performance Gain 4.5 4.5
          • Fit 5 5

          • 5/5

            Installation Time: Full Day

            May 29, 2018

            3/8 Inch Spacer

            Material and fit of spcer is excellent. Hardware is for stock manifold. You may have to purchase different lenght bolts for GT 40 Cobra manifolds or Motorsport SVO manifold. Installed new valve covers and gaskets as part of spacer upgrade. Installed on 5.0L in a Cobra replica. No problem with hood clearence.


            Year: 1987 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            September 30, 2017

            Bbk phenolic spacer

            Wonderful kit. I have the gt40 style intake, the older version. With the gt40 you need four long bolts rather than just two. They worked with me and made sure I had all the hardware necessary. Keeps the engine much cooler definitely feel a throttle response gain. Love the kit.


            Year: 1986 Submodel: Other

            Helpful (6)

          • 5/5

            October 07, 2016

            Bbk phenolic spacer

            The product was good and was really what I need if you have tall valve covers this is the one to get


            Year: 1991 Submodel: Cobra

            Helpful (7)

          • 5/5

            April 20, 2016


            3/8 was the perfect size for my Cobra intake to fit under my BBK strut brace!


            Year: 1988 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            March 21, 2014

            This product is very useful

            Exactly what the title says it works great for what it needs to do


            Year: 1993 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            December 23, 2012

            Good product

            This spacer looks cool raises the upper intake just enough to notice. I had my engine apart so install was a breeze but I have an explorer intake and the bolt kit didn't work with it. Other than that it works great.


            Year: 1992 Submodel: Other Jamestown mo

            Helpful (9)

          • 5/5

            Installation Time: Less than 1 Hour

            December 22, 2012

            this product is awesome

            Hey guys i rebuilt a 1989 mustang gt 5.0l .its got over sized piston and rings wild cam roller rockers bigger heads 75mm throttle body and gt 40 intake and i install this spacer kit and the motor run alot cooler and more air flow true the intake for the horse power that you need i recommend this product to every body that has this intake good price very good product better for you motor thanks Steph


            Year: 1989 Submodel: GT chelsea qc

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            March 26, 2012

            good product

            Very good product. Came with everything i needed. Fits under a stock hood.


            Year: 1990 Submodel: GT mechanicsville,Virginia

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            March 01, 2012

            works good

            i bought this because i have a Kenne Bell s.c. installed, and i wanted to be able to use my adjustable fuel pressure regulator. the regulator is taller than the stock unit. the spacer is the perfect answer to gain the extra room needed and to help keep the air temperatures lower. this is a must for anyone using a super charged setup. also this spacer fits great on my 1995 mustang gt with the gt40 intake, even though it is listed for 86-93s. I couldnt find any issues with it on my 95.


            Year: 1995 Submodel: GT montana

            Helpful (8)

          • 5/5

            Installation Time: Less than 1 Hour

            December 07, 2011

            Made install go perfectly

            Great service as usual from American Muscle , spacer fit great and made installation of new valve covers a breeze... Part was of great quality and came with all necessary hardware to simplify everything. Recommend this part to anyone who needs a little clearance with minimal problems.


            Year: 1987 Submodel: Other Annapolis, MD

            Helpful (6)

          • 4/5

            May 19, 2011

            Very satisfied.

            Easy to install, sealed great and gives me enough room to clean my painted Valve covers. However they do not provide the 7 3/8" long bolts needed for the cobra intake and I had to special order them because it is a premium bolt size.

            Thomas Eakins

            Year: 1988 Submodel: GT

            Helpful (6)

          • 5/5

            June 04, 2010

            Great Spacer

            Work awesome to clear tall valve covers or give your self soe room to work with. Its nice not having to remove the upper to adjust my rockers or swap a bad injector.


            Helpful (11)

          Related Mustang Categories