AIRTEC Motorsport Oil Breather Kit for Ford Focus RS Mk3
The AIRTEC Motorsport Twin Oil Breather Kit (Part No: ATMSFO111) is a high-quality, UK-engineered solution designed to improve the crankcase ventilation system on the Ford Focus RS Mk3 2.3 EcoBoost engine. Developed and manufactured in-house at AIRTEC HQ, this kit is ideal for both standard and modified engines, helping to reduce crankcase pressure, prevent carbon build-up, and maintain peak performance.
Why Upgrade Your PCV and Breather System?
The factory Positive Crankcase Ventilation (PCV) system in the Mk3 Focus RS is prone to allowing oil vapour into the intake, which over time can lead to carbon and sludge build-up on intake valves and components. This reduces airflow, lowers performance, and requires costly cleaning if neglected. Upgrading to the AIRTEC breather kit prevents these issues by:
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Increasing baffle surface area – machined billet PCV plate with extra baffles reduces the amount of oil entering the intake.
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Reducing crankcase pressure – optional connections to one or two external oil breather tanks provide additional venting capacity.
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Minimizing carbon build-up – helps maintain engine efficiency and prolong component life.
Key Features
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Anodised aluminium breather tanks – durable and visually appealing.
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Built-in dipsticks – monitor oil content easily.
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High-quality AeroTec fittings – precise and leak-free connections.
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Billet aluminium PCV plate – precision-machined for maximum efficiency.
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Internal baffles – reduce oil vapour entering the intake and help prevent carbon build-up.
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Engraved AIRTEC logo and anodised finish – combines durability with aesthetics.
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Simple installation – includes all pre-cut hoses, fixtures, and fittings for a straightforward upgrade.
Installation Options
The kit is modular and can be purchased as a complete twin breather system or as separate top or bottom sections, depending on your needs. Installation is quick and straightforward, ensuring that preventative maintenance is easy for both enthusiasts and tuners.
Benefits for Focus RS Owners
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Preserves engine performance and airflow efficiency.
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Reduces intake carbon build-up, extending engine life.
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Enhances reliability on both stock and tuned engines.
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Allows monitoring of oil in breather tanks via lid-mounted dipstick.
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High-quality, UK-manufactured components designed for long-term use.
