Getting the most out of your performance parts comes down to the details. When faced with hard driving conditions, a vehicle’s cooling system becomes highly pressurized. Factory caps are not equipped to handle long term use and often lose pressure, in turn reducing the potential coolant boiling point and boiling the coolant. The Mishimoto 1.1 Bar Overflow Reservoir Cap will keep coolant where it needs to be, flowing within the system.
Note Replacement for Ford 9C3Z-8101-B or Motorcraft RS-527
This cap will not fit the 2015 Mustang.
Also Fits 1999-2003 Ford 7.3L Powerstroke
2003-2007 Ford 6.0L Powerstroke
2008-2010 Ford 6.4L Powerstroke
2011-2016 Ford 6.7L Powerstroke
Purchase Includes (1) – Overflow Reservoir Cap Mishimoto Lifetime Warranty
Pressure Tolerance 1.1 Bar / 16 psi / 110 kPa
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