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and sleeve length to ensure a great fit
Unlike other manufacturers we design all of our cores per application
Allow for a wide range of settings with a large amount of dial range
When paired with the stock plastic intake duct
COBB Air / Oil Separator (AOS) 2016-2018 Ford Focus RS YMM_1999_Legacy and sleeve length to ensureThe COBB Air Oil Separator for Ford Focus RS helps to prevent crankcase oil vapors from recirculating back through your engine's intake system. Oil vapors passing through your engine's intake system lower the effective octane rating of fuel and can contribute to both oil and carbon buildup over time. The COBB Air Oil Separator is placed within your Ford RS's crankcase ventilation system and helps to prevent oil vapors from being introduced into the
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