Vaico V10-3881 Engine Crankcase Vent Valve

Crankcase Vent Valve for VW and Audi

The Vaico V10-3881 engine crankcase vent valve is a pressure-controlled diaphragm valve for the cylinder head, built for crankcase ventilation service on select Audi and Volkswagen models. It is supplied as part of Vaico’s Expert Kits+ line, which groups the needed components into one box for a more complete repair approach.

• Engine crankcase vent valve for emission control and crankcase ventilation service
• Pressure-controlled diaphragm valve design
• Fitting position: cylinder head
• Housing material: Polyamid 6.6
• Seal material: FPM (fluoride rubber) / ACM (polyacrylate rubber)
• Supplementary article: with hose
• Recommended replacement interval: 60,000 km or 3 years
• Part number: V10-3881

Product Line Details

VAICO Expert Kits+ is the brand’s bundled repair line for crankcase breather service. For applications such as Audi A3, Audi TT Quattro, Volkswagen GTI, and Volkswagen Tiguan, the kit format helps match the ventilation valve and related hose components to the OE-style repair path referenced by the vehicle fitment data.

Detailed Description

The Vaico V10-3881 is an engine crankcase vent valve used in the crankcase ventilation system to regulate pressure through a diaphragm-style, pressure-controlled design. Its cylinder-head mounting location, Polyamid 6.6 housing, and FPM/ACM sealing materials are specified for the listed Audi and Volkswagen applications. This part number, V10-3881, cross-references Rein ABV0165 for the same application. It is listed for vehicles including Audi A3, Audi A3 Quattro, Audi A4, Audi A5, Audi Q5, Audi TT, Audi TT Quattro, and Volkswagen CC, Eos, Beetle, GTI, Jetta, Passat, and Tiguan.

What It Helps Address

• Crankcase pressure regulation faults
• Oil vapor routing issues in the ventilation system
• Diaphragm valve wear in the crankcase breather assembly
• Hose-related ventilation service needs
• Emission control system maintenance on listed VW and Audi models

Installation Notes and Tips

Verify the OE number and vehicle build date before ordering, since some fitments are limited by production cutoff dates. Confirm the cylinder-head mounting location and inspect the connected hose routing during installation. The recommended replacement interval is 60,000 km or 3 years, which is useful guidance for scheduled crankcase ventilation service on compatible Audi and Volkswagen applications.

Quality Assurance

Vaico supplies this part as an Expert Kits+ repair solution with the specified materials and fitment references for the listed vehicles. Part number V10-3881 is cataloged against OE-style references for Audi and Volkswagen crankcase ventilation service.