Mishimoto 1.1 Bar Overflow Reservoir Cap (MMRC-11-FRD) fits Ford 1999-2016

Overflow Reservoir Cap for Ford Powerstroke Cooling Systems

The Mishimoto 1.1 Bar Overflow Reservoir Cap (MMRC-11-FRD) fits Ford 1999-2016 applications and is designed to support proper cooling system operation under demanding conditions. During hard driving, the cooling system becomes highly pressurized. Because of this, maintaining consistent pressure is critical to keeping coolant where it belongs.

Maintains Cooling System Pressure Under Load

Factory caps are not equipped to handle long-term use and can lose pressure over time. As a result, the coolant boiling point can be reduced. This overflow reservoir cap is designed to help maintain consistent pressure within the system. Therefore, coolant remains contained and circulating as intended during operation.

Direct Replacement for Ford and Motorcraft

This cap is a direct replacement for Ford 9C3Z-8101-B and Motorcraft RS-527. Because of this, it installs without modification on compatible vehicles. In addition, it is designed to match the fitment and function required for these applications.

Fits 1999-2016 Ford Powerstroke Applications

This cap is designed for use on the following engines:
1999-2003 Ford 7.3L Powerstroke
2003-2007 Ford 6.0L Powerstroke
2008-2010 Ford 6.4L Powerstroke
2011-2016 Ford 6.7L Powerstroke

Important Fitment Note

This cap will not fit the 2015 Mustang. Therefore, always verify your application before installation to ensure proper compatibility and fitment.

For additional cooling system components, browse related parts here:
https://www.reviewdiesel.com/