SKP SK121292 Engine Crankcase Breather Hose

BMW Crankcase Breather Hose Replacement

Restore proper crankcase ventilation with this SKP engine crankcase breather hose, part number SK121292. It is a direct-fit emission control component for select BMW turbocharged applications, including BMW 535i, X5, X6, and other N54/N55-era models with the specified blow-by heater configuration.

Key Features

• Engine crankcase breather hose for the crankcase ventilation system
• Direct replacement for BMW OE part numbers 11 12 7 584 128 and 11127584128
• Fits select BMW 135i, 335i, 535i, X3, X4, X5, X6, and 640i applications
• Application-specific fitment for vehicles with Blow-By Heater S4NEA where noted
• Built for emission control service on compatible BMW models

Detailed Description

The SKP SK121292 engine crankcase breather hose is used in the emission control and crankcase ventilation system to route blow-by vapors as part of normal engine operation. This replacement hose is listed for a wide range of BMW models, including 2011-2016 BMW 535i, 2011-2017 BMW X5, and 2011-2013 BMW 335i, with certain applications requiring the Blow-By Heater S4NEA configuration. This part cross-references BMW OE numbers 11 12 7 584 128 and 11127584128 for the same application.

What It Helps Address

• Cracked or leaking crankcase breather hose
• Oil vapor routing issues in the crankcase ventilation system
• Vacuum leaks related to breather hose deterioration
• Rough idle or drivability concerns tied to ventilation hose failure
• Emission control faults caused by damaged ventilation plumbing

Installation Notes and Tips

Verify engine configuration before ordering, especially on BMW X5, X6, X3, X4, X1, 640i, and 535i applications that require Blow-By Heater S4NEA. Match the original hose routing and inspect adjoining ventilation components for wear, oil saturation, or cracking during service. Confirm fitment against the OE number SK121292 before installation.

Quality Assurance

SKP replacement parts are cataloged for direct application matching and OE cross-reference support. Confirm vehicle fitment by year, model, and engine configuration before installation.