Billet Valve Cover Breather Supra MKV A90 A91 340i / M340i B58 Engine

Enhance your B58-powered vehicle's performance with this high-quality Billet Valve Cover Breather, designed specifically for the Toyota Supra MKV A90/A91 and BMW 340i/M340i models. This breather kit effectively manages crankcase pressure, ensuring optimal engine function and longevity.

Key Features:

• One-Way Check Valve: Incorporates a one-way check ball to prevent unmetered air from entering the engine under vacuum, while allowing excess pressure to vent during boost conditions.

• Direct Replacement: Replaces the factory oil cap, providing a seamless fit without the need for modifications.
  

• Enhanced Performance: Helps reduce crankcase pressure, promoting better turbo efficiency and potentially freeing up horsepower.

• Durable Construction: Crafted from high-quality billet aluminum for strength and longevity.

• Aesthetic Appeal: Available in various finishes to complement your engine bay's appearance.

Installation Notes:

• • Simply remove the existing oil cap and install the breather in its place.

  • No additional modifications or tools required.