Hengst 11-15-1-747-066 Oil Separator

The Hengst 11-15-1-747-066 Oil Separator is a precision-engineered crankcase ventilation component designed to remove oil mist and vapor from blow-by gases before they are recirculated back into the intake system. This oil separator helps maintain engine cleanliness, reduce oil consumption, and prevent carbon buildup in the intake manifold and throttle body.

Key Features:

• High-efficiency filtration removes oil particles from crankcase ventilation gases
• Direct-fit replacement design ensures proper fitment and function
• Durable construction withstands high temperatures and engine vibration
• Helps maintain optimal engine performance and fuel efficiency
• Reduces oil deposits in intake system components

This oil separator is commonly found in BMW applications as part of the positive crankcase ventilation (PCV) system. Regular replacement of the oil separator helps prevent costly engine damage and maintains emissions compliance. The part number 11-15-1-747-066 is the original equipment (OE) specification part number, often referenced as BMW 11151747066.