Breather Plate - RS

Maintain the peak engine performance of your Mk3 Focus RS whilst adding provision to neatly expand your oil breather to include a catch can system.

It's well documented that direct injection engines, like the 2.3-litre EcoBoost found in the Focus RS, create oil vapour from the crankcase and cylinder head which is normally recycled back through the air intake system. This vapour can create a buildup of carbon deposits on the intake valve that reduce engine performance.

Additionally, the oil vapour can accumulate on the intake hoses, turbocharger, intercooler, and intake tract over a period of time, slowing airflow and thereby further reducing performance. For optimised engine performance, the oil should be removed from the vapour before it reaches the engine’s intake system.

The mountune Mk3 Focus RS breather plate directly replaces the original engine block plate and features a substantial increase in baffle surface area over the original part.

The labyrinth-style baffle has been machined into the oil breather plate itself, substantially increasing the surface area compared to OE, which allows more crankcase vent vapour to be trapped and remain in the crankcase where it belongs.

Additionally, the route the oil vapour takes on its way to the intake manifold has been significantly increased through the labyrinth design, resulting in an increase of deflection areas. At each deflection point, additional oil is removed from the vapour.

Installation is easy and, while not required, the mountune Focus RS breather plate also includes two ports to allow easy integration of many catch can systems on the market.

This part is a must-have for higher boost / high performance applications.

• Designed and optimised for modified 2.3-litre EcoBoost engines
• Direct replacement
• Easy installation
• Machined from solid aluminum with a precision machined labyrinth-style baffle
• Twin ports facilitate easy installation of a catch can system

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