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Ford Performance BOSS 302R Cylinder Head - Left Side (11-14 GT)

1 Reviews
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  • Item #50320
  • MPN# M-6050-M50BR

  • Market Price $1,724.99
  • You Save 13% ($225.00)
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  • Original Equipment on the BOSS 302 and 302R Race Car
  • Bolt-On Performance Upgrade
  • CNC Ported Ports and Chambers to Increase Flow
  • Left Hand - Driver Side
  • Genuine Ford Racing Part
  • Sold Individually - No Exchange Required!
  • Fits 2011-2014 GT, Boss 302, Boss 302S and Boss 302R
More Power. Increase the horsepower and torque output of your 4-valve 5.0L Coyote engine with a set of Ford Racing BOSS 302R CNC Ported Cylinder Heads. This is a brand new OEM production BOSS 302R 4-valve cylinder head casting that has been CNC ported by Ford Racing to increase air flow and overall performance of your 5.0 Coyote GT.

Fully Assembled. Leak tested prior to assembly, each Ford Racing Boss Head comes fully assembled with factory steel guides, production springs, valves, retainers, locks, and seals. Does not include camshafts, rocker arms and lash adjusters.

Improved Air Flow. These ported Ford Racing Boss heads have an intake port volume of 193cc allowing for an intake flow of approximately 4% more than the stock 5.0L head.

Additional Features. Extra features include 37mm hollow stem intake valves and 31.8mm sodium-filled exhaust valves for improved heat dissipation.

Required Upgrade. It is required to use the Ford Racing head changing kit part# M-6067-M50BR when installing these Boss 302 heads on your DOHC 5.0L Coyote engine.

Application. This Ford Racing BOSS 302R CNC Ported Driver Side Cylinder Head is specifically designed to be a direct bolt-on performance upgrade for the 2011 to 2014 GT Mustangs with the 5.0L 4-valve V8 Coyote engine. Includes Left Side driver side Ford Racing BOSS 302R Cylinder Head only.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (1) Cylinder head
Installation Info
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • GT - 11, 12, 13, 14

Customer Photos

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6 Questions / 9 Answers

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hp gain How much more power will this add


  • Depends on your other mods (bolt on mods).


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Does this include the camshaft and valves? Just wandering if this includes the camshaft in valves, if the ones in my current mustang will fit this if it doesnt, and if that which ones i would be best off with if im planning on adding a supercharger down the road.


  • The heads come bare, meaning they have the valves installed along with the springs but you need to provide your lash adjusters and roller followers from your old heads, or you can get new ones using the Ford Racing kits M-6500-M50 - lash adjuster assembly or M-6564-M50 - roller follower kit. The factory camshafts will fit without issue but I would be looking to upgrade to better camshafts if I were to do heads as well. Don't forget that you will need assembly lube for installing cams, lash adjusters and followers. I used Comp Cams assembly lube #103 as per Comp cams instructions.


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Do i need to purchase camshafts, rocker arms and lash adjusters if it is a direct bolt on? Will the OEM camshafts/ rocker arms and lash adjusters in the coyote work?


  • You will need to purchase cams, rocker arms and lash adjusters. The OEM parts should fit but you will not get the HP gains unless you change the cams.


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Tune required? Seeing as the are CNC ported with more airflow I would think a tune would be required...If so, can BAMA add this to a tune or does it have to be custom tuned on a dyno?


  • Yes You should have your car tuned after all add ons


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Will these fit the modular 5.0 for new edge mustangs? American muscle sales the modular 5.0 to replace the 4.6 in the new edge mustangs. Will these fit that block?


  • This head is a direct fit replacement for the 2011-14 5.0 modular motor.


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Rocker Arms, Lash Adjusters? Will the stock rocker arms and lash adjusters work with these heads? Also...How about if I were to install Comp Stage 3 Cams?


  • yes they should work but you want to go better like the ones your asking about if you want to get good performance out of better heads


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Customer Reviews (1) Write a Review

Overall Rating 5.0

out of 5 stars

  • 5/5

    August 18, 2016

    Performance gains

    This head is oem from ford so everything fits as it should and the performance gains are nice too especially in the upper rpm range.


    Year: 2011 Submodel: GT

    Helpful (1) (0)

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