The Visconti Tuning Gen2 B58 Valve Cover Upgrade is designed to prevent the internal PCV system from failing on BMW Gen2 B58 engines.

Factory Gen2 B58 valve covers integrate the PCV system directly into the plastic valve cover assembly. When the PCV system fails, the result is often excessive crankcase pressure, oil smoke, and ultimately a broken valve cover.

This upgrade modifies the internal PCV system to improve reliability and prevent the common failure that occurs on higher mileage or higher horsepower engines.

If your valve cover is still intact you can send in your existing unit for modification. If the valve cover has already failed, new upgraded units are also available.

Typical turnaround time is 2–3 days.