This BMW B58 PCV Diaphragm replacement cap comes with all the necessary hardware to replace your old or leaking PCV Diaphragm cap.
The BMW B58 PCV cap is prone to failure with vehicle aging and mileage, as the rubber portion of the PCV cap will naturally dry and begin to crack over time. The PCV diaphragm cap is subjected to constant negative pressure, as a result, any cracks or leaks in the rubber seal will cause engine malfunctions. A replacement plastic end cap is also included in this kit, as it is not uncommon for this portion to be damaged upon removal.
BMW 1 Series
• 2015+ F20/F21 M140i
BMW 2 Series
• 2016+ F22 F23 M240i/iX
BMW 3 Series
• 2016-2019 F30 340i/340iX
BMW 4 Series
• 2016-2020 F32 F33 F36 440i/440iX
BMW 5 Series
• 2017-2019 G30 540i/540iX
BMW 6 Series
• 2017-2019 G32 640i/640iX
BMW 7 Series
2016-2019 G11/G12 740i/740iX
BMW X Series
• 2016-2019 G01 X3 3.0i/M40i
• 2017-2019 G02 X4 3.0i/M40i
If your BMW has a B58 engine and you don't see your exact model on the list below please email us.
Quality part that fit perfectly to replace torn diaphragm on old pcv. Saved from replacing the whole valve cover. Prompt service and shipment
Nice kit that works great, saves the customer money and down time....
BMW B58 PCV Diaphragm Cap Replacement Kit
Overall the kit is worth the affordable price. The diaphragm fits as the original does and material seems identical. The part that doesn’t work is the replacement cap. Try as I might it would not stay on. Which was fine since I had the original cap and snapped it back on. Just be aware if you purchase this to be careful when removing the original cap so you can reuse it.
Great kit, good quality. Way better then replacing the valve cover. Highly recommend