Hose Breather Crank To Intake (Topran) (M271) (Mercedes-Benz C-Class W203 / W204 / E-Class W211 / W212 / CLK-Class W209 / SLK-Class R171) is a vital component in the crankcase ventilation system of several Mercedes-Benz models. This hose connects the crankcase breather to the intake manifold, allowing gases produced during engine operation to be rerouted and managed effectively. It helps maintain optimal engine pressure and reduce harmful emissions, contributing to smoother performance.
This part is specifically suited for M271 engine variants found in the C-Class (W203, W204), E-Class (W211, W212), CLK-Class (W209), and SLK-Class (R171) Mercedes-Benz vehicles. When replacing this hose, it is important to compare it to the old unit to ensure compatibility with your engine’s crankcase breather and intake connections.
The hose’s role in the ventilation system means any damage or wear can lead to issues such as vacuum leaks, decreased engine efficiency, or error codes related to the emissions system. Checking the hose for cracks, brittleness, or disconnections before purchase helps identify if this is the required replacement part.
- Ensures correct routing of crankcase vapors to intake manifold
- Fits a range of popular Mercedes-Benz engine and body styles with M271 engines
- Compare with current hose for fit and connection style
If in doubt about fitment or compatibility with specific model years and engine setups, contacting the sales desk or submitting a request for part details can provide further guidance.
If this repair may need matching clips, brackets, lights, panels or more than one part, check Quick Repair Bundle, Request a Part or Platinum Sales Desk before ordering.





