VNE 4008305 Engine Crankcase Breather Hose

OE-Style Crankcase Breather Hose

This VNE engine crankcase breather hose is an OE supplier replacement for the crankcase ventilation system. It is built for direct-fit service on select Porsche applications and is identified by part number 4008305.

• Engine crankcase breather hose for emission control and crankcase ventilation service
• OE supplier sourcing for factory-style fit and function
• Direct replacement for vehicles using OE No. 98710724601
• Fits 2005-2008 Porsche Boxster, N/A
• Fits 2006-2008 Porsche Cayman, N/A

Fitment Details

Compatible With 2005-2008 Porsche Boxster, N/A, and 2006-2008 Porsche Cayman, N/A. This part cross-references Porsche OE No. 98710724601 for the same application. Use part number 4008305 to verify the correct hose before ordering.

What This Part Addresses

• Cracked or split crankcase breather hose
• Vacuum leaks in the crankcase ventilation circuit
• Oil vapor routing issues from worn hose material
• Check engine concerns related to ventilation flow faults
• Rough idle or drivability issues tied to air leaks

Installation Notes

Confirm the OE number on the original hose before installation. Inspect adjoining crankcase ventilation components, hose connections, and sealing surfaces for wear or contamination. Match the routing and connection points to the factory layout on the Porsche Boxster or Porsche Cayman application.

Quality Assurance

VNE identifies this part as an OE supplier component, supporting factory-style replacement expectations for the crankcase ventilation system. Part number 4008305 is intended for the listed Porsche fitments only.