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537192 3V Head Cooling Mod / Coolant Balance Tube Ford 4.6 & 5.4

3V Head Cooling Mod / Coolant Balance Tube Ford 4.6 & 5.4

MMR Professional Head Cooling Mod (HCM) for 2005-2010 4.6/5.4 3V  This professional kit includes Billet left and right cylinder head...
$139.99

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437192 MMR 1996 - 2004 Cobra / SVT Professional Head Cooling Mod (HCM)

MMR 1996 - 2004 Cobra / SVT Professional Head Cooling Mod (HCM)

MMR Professional Head Cooling Mod (HCM) for 96-04 DOHC 4.6/5.4 (ALL Heads) - (rear of heads) This professional kit includes Billet left and right...
$199.99  $119.99
Save: 40% off


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455478 MMR 2011-2021 Mustang GT 5.0 / Shelby 5.2 Head Cooling Mod HCM

MMR 2011-2021 Mustang GT 5.0 / Shelby 5.2 Head Cooling Mod HCM

Patent Pending MMR's cooling head mod ( HCM ) for the 2011-2021 5.0 / 5.2 Coyote is designed to help eliminate hotspots in the #8 cylinder...
$199.99  $149.99
Save: 25% off


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455498 MMR Cylinder Head Oiling Modification (HOM) for Ford Coyote 5.0

MMR Cylinder Head Oiling Modification (HOM) for Ford Coyote 5.0

This part may save your engine!! The MMR cylinder head oiling modification ( oil balance lines ) joins the left and right cylinder head together with...
$109.99

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