VNE 4008303 Engine Crankcase Breather Hose

OE-Style Crankcase Breather Hose

This VNE engine crankcase breather hose is an OE supplier replacement for select Porsche applications. It is built for vehicles that need a direct-fit crankcase ventilation hose with the correct OE reference, including Porsche Boxster and Porsche Cayman models.

• Brand: VNE
• Part number: 4008303
• Category: Engine crankcase breather hose
• OE supplier replacement for factory-style fit and function
• Cross-reference: Porsche 98710794700

Fitment Details

Compatible with 2005-2008 Porsche Boxster, N/A, with OE No. 98710794700.

Compatible with 2006-2008 Porsche Cayman, N/A, with OE No. 98710794700.

Use this hose when servicing the crankcase ventilation system on Porsche Boxster and Porsche Cayman models that call for OE No. 98710794700. The VNE 4008303 is a direct replacement reference for the factory hose used in these applications.

Common Issues This Part May Address

• Cracked or hardened crankcase breather hose material
• Vacuum leaks in the crankcase ventilation system
• Oil vapor routing problems caused by a damaged hose
• Rough idle or drivability concerns related to unmetered air leaks
• Visible wear at hose connections or bends

Installation Notes and Tips

Verify the OE number before ordering to confirm application match. Inspect adjoining crankcase ventilation components, hose ends, and sealing surfaces during replacement. Confirm routing matches the original hose path on the vehicle.

Quality Assurance

VNE identifies this part as an OE supplier replacement, supporting factory-style application coverage for the listed Porsche models. Part number 4008303 is referenced for 2005-2008 Porsche Boxster and 2006-2008 Porsche Cayman applications with OE No. 98710794700.