PCV Silicone Breather Membrane For Ford Focus Fiesta Fusion 1.6TDCi

Restore precise crankcase ventilation and protect your diesel engine from harmful sludge deposits with the PCV Silicone Breather Membrane engineered for the Ford Focus, Fiesta, and Fusion 1.6 TDCi platform.

This membrane serves as the final filtration stage in the Positive Crankcase Ventilation circuit, trapping oil mist and moisture while permitting controlled gas evacuation. Built with a 51 mm active diameter and backed by PA66+GF30 reinforced polymer, the unit maintains a hermetic seal under sustained thermal stress and engine vibration. By keeping unmetered air out and crankcase pressure balanced, it prevents excessive blow-by, reduces carbon accumulation on intake valves, and promotes stable idle performance alongside improved fuel efficiency.

Benefits & Practical Tips

• Schedule replacement during regular 15,000-mile or 16-month service intervals to stop gradual clogging that triggers rough idling and oil consumption.
• Clean the mounting flange gently before fitting the new membrane; residual gasket fragments can cause leaks and defeat the hermetic seal.
• Test drive after installation and monitor for blue exhaust smoke or erratic RPM drops, which typically resolve once venting is fully restored.

Technical Specifications

Active Diameter: 51 mm
Core Material: Silicone membrane fused to PA66+GF30 reinforced composite
Fitment Focus: Ford Focus II/III, Fiesta VI, Fusion, Peugeot 206/307/308, Citroën C3/C4/Xsara Picasso, Mazda 3, Volvo V50/S80, Mini Cooper R56, Fiat Scudo
Reference OEM Numbers: 0248L1, 1479837, 31259241, 9651815680, Y60110210B, 1117073J00, 1690275, 3M5Q-6K271-AC, 993760, 8200323338
Condition: Brand New

Package Includes:

• 1 x PCV Silicone Breather Membrane

Important Reminders

Compatibility spans multiple model years and regional trim configurations. Always cross-check the physical shape, bolt pattern, and casting number of your existing component against the reference list above before purchase. Mismatched units may compromise engine performance or leave ventilation paths open. Professional fitting tools are recommended for safe removal.

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