Vaico V10-4640 Engine Crankcase Breather Hose Check Valve

Crankcase Breather Valve for Volkswagen Applications

The Vaico V10-4640 is an engine crankcase breather hose check valve for emission control systems. It is built for pressure-controlled operation at the cylinder head and supplied as an Expert Kits+ solution, with the needed sealing components packaged in one box.

Compatible With select Volkswagen Cabrio, Jetta, Golf, and Passat models, this breather valve supports crankcase ventilation service where OE-style fit and sealing are required. The Vaico V10-4640 is a direct replacement option for vehicles using OE reference 048103772C.

Key Features

• Engine crankcase breather hose check valve for emission control service
• Pressure-controlled breather valve design
• Fitting position: cylinder head
• Housing material: Polyamid 6.6
• Seal material: FPM (fluoride rubber) and ACM (polyacrylate rubber)
• Includes seal ring and seal
• Dimensions: 205 mm length, 120 mm width, 85 mm height
• Recommended replacement interval: 60,000 km or 3 years

Detailed Description

Vaico V10-4640 is an emission control crankcase ventilation component engineered as a pressure-controlled breather valve for the cylinder head. The housing uses Polyamid 6.6, while the sealing materials combine FPM and ACM for service in demanding engine environments. As part of Vaico’s Expert Kits+ line, the product is packaged with the required sealing pieces in a single box to support a cleaner parts match during maintenance. This part cross-references OE application 048103772C for the same application. The Vaico V10-4640 is a practical replacement choice for Volkswagen Cabrio, Volkswagen Jetta, and Volkswagen Golf service work where crankcase ventilation sealing and valve function are critical.

What It Helps Address

• Cracked or leaking crankcase breather valve housing
• Faulty pressure control in the crankcase ventilation circuit
• Oil vapor leakage around the cylinder head breather area
• Sealing issues at the breather valve connection
• Emission control faults related to crankcase ventilation flow

Installation Notes and Tips

Verify OE number 048103772C before ordering and compare the cylinder head mounting location, dimensions, and connector style to the removed part. Inspect the mating surfaces and replace worn seals during service to maintain proper sealing. Follow the vehicle service procedure for crankcase ventilation components and confirm there are no vacuum leaks after installation. Fits 1995-2002 Volkswagen Cabrio, N/A. Fits 1995-1999 Volkswagen Jetta, N/A. Fits 1995-1998 Volkswagen Golf, N/A. Fits 1995-1996 Volkswagen Passat, N/A.

Quality Assurance

Vaico supplies OE-style replacement parts for European vehicle service, and the V10-4640 is packaged as an Expert Kits+ component set with the required sealing pieces included. Recommended replacement interval is 60,000 km or 3 years.