Genuine Porsche 99610714555 engine crankcase breather hose

The Genuine Porsche 99610714555 engine crankcase breather hose is a critical component of your Porsche's positive crankcase ventilation (PCV) system. This breather hose connects the top of the oil separator to the engine, routing pressurized crankcase vapors to the air/oil separator valve where oil vapors are removed before the air is recirculated into the intake system.

Key Features:

• Genuine OEM Porsche part manufactured to exact factory specifications
• Direct replacement for part numbers 996 107 145 55 and 147 43009 001
• Designed to withstand constant exposure to heat, pressure, and oil vapors
• Essential for proper engine performance and emissions compliance
• Upper fitting breather hose position

The crankcase breather system manages positive pressure that builds up as a byproduct of combustion. Over time, breather hoses can deteriorate due to exposure to oil vapors, heat cycles, and pressure, leading to cracks, leaks, or brittle connectors. Symptoms of failure include oil residue on the hose or adjacent components, rough idle, increased oil consumption, or fouled spark plugs. Regular inspection and timely replacement of this hose ensures optimal engine performance and prevents costly repairs down the road.

Alternate Part Numbers: 996 107 145 55, 14743009001, 147 43009 001