11127568579 / 11127521086 Valve Cover Breather Cover for BMW N45, N45N, N45T, M56
This valve cover breather cover is designed for BMW N45, N45N, N45T and M56 engine applications using OEM references 11127568579 and 11127521086. It seals the crankcase ventilation outlet on the valve cover and helps restore correct PCV sealing.
The part is intended as a replacement breather cover for the existing valve cover. It is not a complete PCV repair kit, complete crankcase ventilation valve, or full valve cover assembly.
OEM / Reference Numbers
Primary OEM / valve cover reference numbers:
- 11127568579
- 11127521086
Secondary OEM / valve cover reference numbers:
- 11127521080
- 11127526665
- 11127565742
- 11127777347
- 11127509524
- 11127526667
- 11127568580
Product reference:
- SKU: KL1112756857911127521086C
Part Type
- valve cover breather cover
- PCV breather cover
- crankcase ventilation outlet cover
- engine breather cap
- valve cover PCV sealing component
What This Part Does
The valve cover breather cover seals the crankcase ventilation outlet and supports correct PCV system sealing. When the cover cracks, breaks or no longer seals correctly, the engine can develop oil leaks and incorrect crankcase ventilation.
Replacing the failed cover helps restore sealing at the valve cover breather area while keeping the original valve cover in service.
Compatible Vehicles
This valve cover breather cover is listed for BMW models with compatible N45, N45N, N45T or M56 engine applications.
- BMW N45 engine applications
- BMW N45N engine applications
- BMW N45T engine applications
- BMW M56 engine applications
Compatibility should be confirmed by checking the original valve cover number and comparing the breather cover design.
Engine / Engine Family
- BMW N45
- BMW N45N
- BMW N45T
- BMW M56
Common Symptoms of Failure
- oil leaks around the valve cover breather area
- incorrect crankcase ventilation
- vacuum leak symptoms
- unstable engine operation
- rough idle
- visible cracked or broken breather cover
Why Choose This Replacement
- Targets the exact repair intent for 11127568579 and 11127521086
- Replaces the failed valve cover breather cover only
- Helps restore sealing of the crankcase ventilation outlet
- Cost-effective alternative to replacing the complete valve cover when only the cover has failed
- Suitable for BMW N45 and M56 valve cover breather repair applications
Important Before Ordering
- Check that your original valve cover reference matches 11127568579, 11127521086 or one of the listed related numbers.
- Confirm that your vehicle uses a compatible BMW N45, N45N, N45T or M56 engine.
- Compare the breather cover shape and mounting design with your original part.
- This product is a breather cover only, not a complete valve cover assembly.
- Verify compatibility by OEM number, engine type and part design before ordering.
FAQ
What do BMW 11127568579 and 11127521086 fit?
BMW 11127568579 and 11127521086 are listed for valve cover breather cover replacement on compatible BMW N45, N45N, N45T and M56 engine applications.
Is 11127521080 related to 11127568579?
11127521080 is listed as a related valve cover reference for this breather cover application. The main SEO focus remains 11127568579 and 11127521086.
What does this valve cover breather cover do?
It seals the crankcase ventilation outlet on the valve cover and helps maintain correct PCV system sealing.
What symptoms indicate valve cover breather cover failure?
Common symptoms include oil leaks, visible cracks, incorrect crankcase ventilation, vacuum leak symptoms, rough idle and unstable engine operation.
Is this a complete valve cover or PCV repair kit?
No. This product is the valve cover breather cover only. It is not a complete valve cover assembly or complete PCV repair kit.
How do I confirm compatibility before ordering?
Confirm the original valve cover reference number, check the engine type, and compare the breather cover design with your original part before ordering.
Read All
Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings