B58 PCV Diaphragm Replacement for BMW 340i M340i 440i 540i Supra

This PCV Replacement kit is designed to provide everything you need to easily replace your old, cracked, or leaky diaphragm with a new one, all without the hassle of replacing or removing the entire valve cover. A common problem in the past was the brittle cap breaking during removal, which could be frustrating for DIY enthusiasts. To address this, our kit includes a replacement cap, ensuring a smooth and worry-free installation experience.

Thicker and more robust diaphragm compared to stock, leading to a longer life!

OEM PCV part number 11121025447