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Edelbrock Cooling System Upgrade Kit (05-06 GT)

Item 56539
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      Product Information

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


      • Cooling System Upgrade Kit
      • Required for Installation of E-Force Supercharger Kit
      • Includes All Hoses, Clamps, & Hardware
      • Fits 2005-2006 4.6L 3V GT Mustangs


      Cooling System Upgrade. This kit relocates your Mustang's thermostat from your radiator's "cold" side to the "hot "side to improve cooling performance significantly.

      Required for E-Force Supercharger. This cooling system upgrade kit includes all the hoses, clamps, and hardware necessary to upgrade your 2005 or 2006 Mustang GT's system and install your Edelbrock E-Force Supercharger.

      Application. This kit is designed for 2005-2006 Mustang GTs.

      Fitment: 2005 2006 Details

      Edelbrock 15804

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) 4.0ā€ Worm Drive Hose Clamp
      • (1) Thermostat Housing
      • (1) Thermostat
      • (1) 3.0ā€ I.D. Black Silicone Hose
      • (1) Lower Coolant Hose Assembly
      • (1) Upper Radiator Hose
      • (1) M6 x 1.0 Nylon Nut
      • (1) Throttle Position Sensor

      Tech Specs


      Customer Reviews (5)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 5 customers

      Installation Time: Afternoon

      • August 01, 2019

        5 2006 GT - JeffRick Installation Time: Afternoon

        Cooling system

        Very easy to install. no running to the parts store. The only thing need was coolant. looks like it belongs there cleaner than the factory set up

        Helpful (4)
      • February 23, 2016

        3 2006 GT - Ras Installation Time: Afternoon

        Odd part

        This thing while is necessary it is poorly built. The connector that it replaces is made of metal and the one that is here is plastic. So now if I need a new hose I have to buy the whole thing again. Because its all built and molded together. Also the hose that goes from the top of the radiator to the water crossover pipe on the block was bent at the wrong angle. So the correct position was like 7 o'clock and the hose was at 11 o'clock. I was able to rotate it to work ok.

        Helpful (15)
      • August 22, 2014

        5 2006 GT - bucksnort58 Installation Time: Less than 1 Hour

        edelbrock hose kit for supercharging

        Fantastic product. I needed this for the installation of Edelbrock Supercharger that I purchased for my 2006 Mustang GT. Competitively priced! Thanks AM for carrying this product!

        Helpful (13)
      • August 26, 2013

        5 2006 GT - P51DRIVER Installation Time: Less than 1 Hour

        A Required Improvement for 05-06 GT Cooling Systems

        Edelbrock's cooling system upgrade for 2005-06 GT takes advantage of modified specs of 2007 GT by moving the thermostat from the cool to the hot side for more efficient cooling. Because the installation of the supercharger eliminates the OE coolant crossover (located above alternator), the upgrade is required. The kit, containing a new thermostat and housing, is well-made with excellent fit and is easy to install. It completes the replacement of all radiator hoses.

        Helpful (14)
      • April 20, 2013

        4 2006 GT - BOSS06 Installation Time: Afternoon

        You need it !

        This product you need to buy, if you install the Edelbrock E-Force Supercharger. This kit is for the 05 & 06 Mustang GT. I had to buy another kit, because the upper hose was rubbing on a hose clamp that is clamped to the antifreeze over flow tank. I wish You could just buy 1 part instead of the whole kit. When you or somebody installs it check all hoses and hose clamps so this does not happen to you. Hope this helps.

        Helpful (14)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      Cooling kit for N/A application? My question was if the cooling upgrade kit will fit the natural aspirated GT? I also believe the modified ones like mine will benefit from the thermostat being on the hot side of the hoses and was wondering if this is specific to forced induction setups (like the E-force) only or if it's for any induction. I also was wondering why they list and include a new throttle position sensor in the kit? Thanks!

      • This is not a kit you want to install on a normally aspirated motor. Your normally aspirated motor is designed to have coolant temps held within your engine block for proper burning of fuel so that MPG requirements are met. When you change to forced induction, you increase the amount of fuel and air that is charged into the cylinders by the superchrager..This increases your cylinder pressure and also increases your cylinder temperature, thus we move to a different coolant/radiator hose configuration to take advantage of a faster charge of cooled radiator fluid to help keep engine temps in check. This is a nut shell explanation of what happens between a normally aspirated engine and a supercharged engine. I hope this helps you.

      Helpful (1)

      Hello so Iā€™m going to be doing a on3 turbo kit on a 2006 mustang gt. And it recommends swapping the crossover to the 07 for clearance with turbo setup. I was wondering is this gonna work for a turbo setup too, and also what degree is the thermostat that comes with it?

      Do you need this for an 09 mustang gt with the e force supercharger kit?

      • No, this is not needed for the 09 GT Mustang.

      Helpful (0)
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