Genuine OEM 11157603816 - Vacuum Line

Product Overview

This Genuine OEM 11157603816 vacuum line is an original BMW replacement part engineered to factory specifications. It serves the vacuum distribution system on a wide range of BMW models, including the 3 Series sedan (E90, F30), 5 Series sedan (F10), X1 SUV (E84, F48), X3 SUV (F25), X4 SUV (F26), and X5 SUV (F15) from 2012 to 2018. Vacuum lines are critical components that direct pressurized air to emission controls, brake boosters, and climate systems. This genuine part ensures reliable system operation and maintains your BMW's performance and emissions compliance.

Symptoms of a Failing Vacuum Line

• Soft or spongy brake pedal feel despite normal brake fluid level
• Hissing or whistling sounds from the engine bay, especially during acceleration
• Rough idle or stumbling during low-speed driving
• Climate control blower not functioning or responding slowly to mode changes
• Check Engine light illuminated with vacuum-related diagnostic codes
• Difficulty starting the engine, particularly in cold conditions

Cross Reference Numbers

This Genuine OEM 11157603816 is equivalent to or replaces the following part numbers: 11-15-7-603-816.

Vehicle Compatibility

This part fits the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility for your vehicle.

• BMW 228i 2.0 L4 Gas (F22): 2014–2015
• BMW 320i 2.0 L4 Gas (F30): 2013–2018
• BMW 328i 2.0 L4 Gas (F30): 2012–2015
• BMW 328i 3.0 L6 Gas (F30): 2012–2013
• BMW 428i 2.0 L4 Gas (F32): 2014–2015
• BMW 428i Gran Coupe 2.0 L4 Gas (F36): 2015–2016
• BMW 528i 2.0 L4 Gas (F10): 2012–2015
• BMW X1 2.0 L4 Gas (E84, F48): 2012–2015
• BMW X1 3.0 L6 Gas (E84): 2013–2015
• BMW X3 2.0 L4 Gas (F25): 2013–2017
• BMW X3 2.0 L4 Diesel (F25): 2015–2016
• BMW X3 3.0 L6 Gas (F25): 2013–2017
• BMW X4 2.0 L4 Gas (F26): 2015–2018
• BMW X4 3.0 L6 Gas (F26): 2015–2017
• BMW X5 3.0 L6 Gas (F15): 2016–2018
• BMW X5 3.0 L6 Diesel (F15): 2016–2018
• BMW X5 4.4 V8 Gas (F15): 2016–2018

This may also fit other applications. Please use the vehicle selector tool to verify fitment.

Often Replaced Together

For a complete vacuum system service, many owners replace the following at the same time:

• Additional vacuum lines and connectors if multiple lines show wear or cracking
• Brake booster if the system has been depressurized for an extended period
• Vacuum check valves to ensure proper one-way flow in the system
• EVAP canister purge valve if emission control diagnostics indicate leaks

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Frequently Asked Questions

How do I know if my BMW vacuum line is failing?

Common warning signs include a soft brake pedal, hissing or whistling sounds from the engine bay, rough idle, or unexpected climate control malfunction. If your vehicle has multiple symptoms or a check engine light related to vacuum leaks, a failing vacuum line is a likely culprit. Inspect visible lines for cracks, splits, or deterioration, especially on older models where rubber naturally hardens over time.

Will this vacuum line fit my 2015 BMW X3?

Yes, this Genuine OEM 11157603816 is compatible with 2015 BMW X3 models equipped with 2.0 L4 gasoline, 2.0 L4 diesel, or 3.0 L6 gasoline engines. Always verify your specific engine and trim configuration using the vehicle selector tool before purchase to ensure exact fitment.

How long does a vacuum line typically last?

Vacuum lines are rubber components that naturally degrade over time due to heat, ozone, and engine vibration. Most OEM lines remain functional for 80,000 to 120,000 miles, but environmental conditions and engine bay temperature can accelerate or extend that lifespan. If your BMW is over 10 years old or has high mileage, proactive replacement can prevent unexpected vacuum leaks.

Is this a genuine BMW part?

Yes. This is a Genuine OEM part manufactured to original BMW specifications. Genuine parts carry the factory warranty and are engineered to match your vehicle's exact vacuum system design, ensuring proper fitment and long-term reliability.

Can I replace just one vacuum line, or should I replace multiple lines at once?

If you have identified a single failing line, you can replace just that line. However, if your vehicle is older or high-mileage, the remaining lines may be approaching the end of their service life. Many technicians recommend inspecting all accessible lines and replacing any that show cracking, hardening, or deterioration to avoid repeat repairs in the near future.

What tools do I need to replace this vacuum line?

Replacement typically requires basic hand tools such as screwdrivers, pliers, and possibly a socket set depending on which lines you are accessing. Some lines may require removal of intake manifold covers or other engine bay components. Consult your BMW service manual or a professional technician for the specific removal and installation steps for your model year and engine configuration.

Order Genuine OEM 11157603816 vacuum line today. In-stock orders ship same or next business day from our U.S. warehouse, and our fitment team is one call away if you need help confirming the right part for your BMW.

Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.