11618515685 / 11617811909 Swirl Flap Delete Plug Kit for BMW N57N, N57X and N57Z
This swirl flap delete plug kit is designed for BMW N57N, N57X and N57Z diesel engines using compatible intake manifolds 11618515685 and 11617811909. The plug seals the intake manifold shaft opening after the factory swirl flap mechanism has been removed.
The kit includes the intake manifold shaft blank plug and sealing gaskets required for this repair. It is a targeted swirl flap delete component for compatible BMW diesel intake manifolds, not a complete intake manifold assembly and not a replacement set of swirl flaps.
OEM / Reference Numbers
- 11618515685 — compatible intake manifold reference
- 11617811909 — compatible intake manifold reference
No additional secondary or interchange OEM numbers are listed for this product.
Part Type
- Swirl flap delete plug kit
- Intake manifold shaft blank plug
- Swirl flap shaft plug
- Intake manifold blanking plug with gaskets
- BMW diesel intake manifold repair component
What This Part Does
The factory swirl flap system uses a shaft mechanism inside the intake manifold to control intake airflow. On compatible BMW N57N, N57X and N57Z diesel engines, this mechanism can wear, stick from carbon buildup or create air leaks over time.
This plug is installed after removing the swirl flap shaft mechanism. It closes the opening in the intake manifold and helps prevent boost leaks, vacuum leaks and intake air loss after swirl flap removal.
Compatible Vehicles
This kit is intended for BMW diesel models with N57N, N57X or N57Z engines and compatible intake manifold references 11618515685 or 11617811909.
- BMW 5 Series F10 / F11 M550dX — 2010 to 2017
- BMW 7 Series F01 / F02 750dX / 750LdX — 2011 to 2015
- BMW X5 E70 / F15 M50dX — 2011 to 2018
- BMW X6 E71 / F16 M50dX — 2011 to 2019
Important: this kit is designed only for N57N, N57X and N57Z engines. It does not fit M57, early N57 or B57 engines. Always verify your engine code and intake manifold part number before ordering.
Engine / Engine Family / Technical Detail
- Engine codes: N57N, N57X, N57Z
- Engine type: BMW diesel
- Compatible intake manifold references: 11618515685, 11617811909
- Application: intake manifold swirl flap shaft blanking after swirl flap removal
- Kit detail: plug with high-temperature oil-resistant gaskets
- Designed for high boost pressure diesel applications, including N57X triple-turbo M50d models
Common Symptoms of Failure
- Boost leaks from the intake manifold area
- Vacuum leaks after swirl flap wear or removal
- Reduced boost pressure
- Intake air loss
- Carbon-related sticking of the swirl flap mechanism
- Mechanical wear in the swirl flap shaft system
- Risk of internal engine damage from swirl flap failure
Why Choose This Replacement
- Targets BMW intake manifold references 11618515685 and 11617811909
- Designed specifically for N57N, N57X and N57Z diesel engines
- Seals the intake manifold shaft opening after swirl flap removal
- Includes gaskets for an airtight seal
- Helps prevent boost leaks and intake air loss
- Suitable for high-boost BMW diesel applications, including M50d models
Important Before Ordering
- Check your original intake manifold part number before purchase.
- Confirm compatibility with 11618515685 or 11617811909.
- Verify that your engine is N57N, N57X or N57Z.
- Do not order this kit for M57, early N57 or B57 engines.
- This product is not a complete intake manifold assembly.
- This product is not a replacement set of swirl flaps.
- Install only after confirming the correct swirl flap shaft design on your manifold.
FAQ
What does BMW intake manifold 11618515685 fit?
Intake manifold reference 11618515685 is listed for this swirl flap delete plug kit for BMW N57N, N57X and N57Z diesel applications. Confirmed model groups include F10 / F11 M550dX, F01 / F02 750dX / 750LdX, X5 E70 / F15 M50dX and X6 E71 / F16 M50dX.
Is 11617811909 the same type of intake manifold reference as 11618515685?
Yes. The product page lists both 11617811909 and 11618515685 as compatible intake manifold references for this BMW N57N, N57X and N57Z swirl flap delete plug kit.
What does this swirl flap delete plug kit do?
This kit seals the intake manifold shaft opening after the factory swirl flap mechanism is removed. It helps prevent boost leaks, vacuum leaks and intake air loss in compatible BMW diesel intake manifolds.
What symptoms indicate swirl flap shaft or manifold sealing problems?
Typical issues include boost leaks, vacuum leaks, reduced boost pressure, carbon-related sticking, intake air loss and wear in the swirl flap shaft mechanism. In severe cases, swirl flap failure can create a risk of internal engine damage.
Is this a complete intake manifold or swirl flap set?
No. This product is a swirl flap delete plug kit with gaskets. It is not a complete intake manifold assembly and it is not a replacement set of swirl flaps.
How do I confirm compatibility before ordering?
Check that your engine code is N57N, N57X or N57Z and confirm that your intake manifold reference is 11618515685 or 11617811909. This kit does not fit M57, early N57 or B57 engines.
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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