Description
The right part.
Down to the detail.
This BMW B58 PCV valve diaphragm repair kit is a brand new aftermarket replacement for selected first-generation 3.0L turbo petrol engines. It includes the diaphragm, cap, spring and spring guide pictured, for the matching crankcase ventilation pressure-control assembly.
Match valve-cover reference 11127645173, the original PCV design and your VIN before ordering. Repair kit only — not a complete valve cover. Parts Factory Australia aftermarket replacement; not a genuine BMW part.

BMW B58 PCV valve kit details.






BMW B58 PCV valve fitment.
Selected first-generation B58 applications
The model and chassis groups below are a guide to selected 3.0L turbo petrol applications. They do not guarantee every build, production year or engine version. Match your original valve-cover number, PCV design and VIN before purchase.
| BMW model | Selected chassis | Fitment requirement |
|---|---|---|
| M140i | F20 / F21 | First-generation B58; match cover 11127645173 and VIN |
| M240i | F22 / F23 | First-generation B58; match cover 11127645173 and VIN |
| 340i / selected 340i GT | F30 / F31 / F34 | First-generation B58; match cover 11127645173 and VIN |
| 440i / Gran Coupe | F32 / F33 / F36 | First-generation B58; match cover 11127645173 and VIN |
| 540i | G30 / G31 | First-generation B58; match cover 11127645173 and VIN |
| 640i Gran Turismo | G32 | First-generation B58; match cover 11127645173 and VIN |
| 740i / 740Li | G11 / G12 | First-generation B58; match cover 11127645173 and VIN |
| Selected early X3 M40i / X4 M40i | G01 / G02 | First-generation B58; match cover 11127645173 and VIN |
Not universal to all B58 engines or later B58 revisions. Model names alone do not establish fitment. Send our team your VIN, original cover number and clear photos of the PCV cap if you need help.
Repair-kit number and valve-cover reference
Repair-kit OE reference: 11121025447 / 11 12 1 025 447. The separate reference 11127645173 / 11 12 7 645 173 identifies the matching complete valve cover, not the kit itself. These BMW numbers are compatibility references; the supplied kit is aftermarket.
What is included?
One BMW B58 PCV valve repair kit with diaphragm, cap, spring and spring guide as pictured. A complete valve cover, valve-cover gasket and unrelated engine components are not included. The photographs show the supplied kit from several angles, not multiple kits.
Have the fault professionally diagnosed before fitting. A diaphragm repair kit does not repair a cracked cover, internal oil-separator faults or every cause of smoke, whistling or rough running. Professional installation is recommended. Three-year replacement warranty applies subject to the full terms.

Confidence starts
before dispatch.
We select our manufacturers for quality, and every part is tested in Australia before it leaves us. It’s a standard we stand behind with local support.
Less waiting.
More driving.
Currently out of stock. Use the email notification option at the top of this page for stock updates. No dispatch date is promised.
Australian orders under 500g receive free express postage. Orders weighing 500g or more receive free regular postage. Dispatch is from Queensland; availability and delivery estimates are shown at checkout.
Free express postage.
Express delivery is included for Australian orders under 500g.
Free regular postage.
Heavier orders travel by regular post at no delivery charge. See the shipping policy for available options.
Know what to expect.
Check the shipping policy for delivery information, or contact our team before ordering.


at Parts Factory
Real people.
Behind every part.
For nine years, our family-owned business has helped Australians find the parts they need. From checking an application to after-sales support, you can speak with our local team.
Real people.
Practical know-how.
Get to know Parts Factory Australia, then explore our installation tutorials, parts guides and practical tips on YouTube.
Explore our YouTube tutorials ↗
Tutorial availability varies by part and vehicle. Check the exact application and follow the product’s professional installation requirements.
Years of replacement cover.
Professional installation and receipts are required.
Read the full warranty terms ↗
Help when you need it.
Contact our team for fitment, delivery or after-sales support. View our 7-day returns policy and conditions ↗
Good questions.
Clear answers.
Choose the right BMW B58 PCV valve repair kit with the correct part number and a fitment check.
How do I check this BMW B58 PCV valve kit fits?
Match your original valve-cover reference 11127645173, the PCV cap and diaphragm design, and your VIN. The selected application table is not a guarantee for every build or later B58 engine revision.
What is included?
One repair kit containing the diaphragm, cap, spring and spring guide shown in the photos. The photos are different views of the same kit.
Is a complete valve cover included?
No. This is a PCV pressure-control diaphragm repair kit only. Repair-kit reference 11121025447 is separate from complete valve-cover reference 11127645173.
Is this a genuine BMW part?
No. It is a Parts Factory Australia aftermarket replacement. BMW OE references are supplied to help check compatibility.
Will this fix every smoking or whistling fault?
No. Diagnose the fault first. A damaged cover, internal oil-separator issue or another engine fault may need a different repair. Professional installation is recommended.
When will it be available?
This BMW B58 PCV valve repair kit is currently out of stock. Use the stock-notification option on this page or contact our Australian team. No dispatch date is promised.
What does the warranty require?
The three-year Parts Factory Australia replacement warranty is subject to the full terms. Professional installation and retained receipts are required. Read the warranty policy for coverage and claim requirements.


Reviews
There are no reviews yet