Rein ABV0178 Crankcase Breather Hose Oil Separator to Oil Return Pipe

The Rein ABV0178 Engine Crankcase Breather Hose is an essential component of your vehicle's Positive Crankcase Ventilation (PCV) system. This premium-grade hose connects the oil separator vent valve to the oil return pipe, playing a critical role in regulating crankcase pressure for optimal engine performance.

Key Features:

• Manufactured from durable EPDM rubber material for long-lasting performance
• Matches original equipment design specifications for exact OE fit
• Direct replacement for BMW OEM part number 11157567801 and Gates EMH231
• Resistant to heat, salt, road debris, oil and other contaminants
• Designed to withstand fuel vapors and oil exposure
• Complies with SAE J30R7 specifications

This OE-quality replacement hose routes blow-by gases back into the intake air stream, helping to reduce harmful emissions while maintaining proper engine operation. A damaged crankcase breather hose can lead to vacuum leaks, check engine lights (including DTCs P0171 and P0174), rough idling, and decreased engine efficiency. Trust Rein Automotive, part of CRP Industries, for professional-grade replacement parts engineered to meet or exceed original equipment standards.