A Guide to Replacing Ignition Coils on the 2007-2016 BMW 528i
Diagnose common misfires and choose the right ignition coils for your N52 or N20 engine.
- Ignition coil failure is very common; symptoms include misfires, rough idle, and a check engine light.
- For 2007-2011 N52 engines, BMW TSBs recommend replacing original Bosch coils with Delphi coils for better reliability.
- Always replace all coils at once using the same brand; do not mix and match.
- This is an easy DIY repair that can be completed in about an hour with basic tools.
Is Your BMW 528i Running Rough? It Could Be an Ignition Coil.
Ignition coil failure is one of the most common issues for the 2007-2016 BMW 528i. These parts operate in a high-heat, high-vibration environment and eventually wear out. When a coil starts to fail, it can't deliver the powerful spark your engine needs, leading to noticeable performance problems. Symptoms often start small but can become severe if ignored.
Key Failure Symptoms
- Engine Misfires: The most common symptom. You may feel a stuttering or hesitation from the engine, especially during acceleration.
- Rough Idle: The car may shake or vibrate more than usual when stopped at a light or in park.
- Check Engine Light: A failing coil will trigger the check engine light. If the light is flashing, it indicates a severe misfire that could damage your expensive catalytic converters.
- Loss of Power: Your 528i will feel sluggish and slow to accelerate.
- Reduced Fuel Economy: When your engine isn't burning fuel efficiently due to weak spark, your gas mileage will suffer.
Generation Differences: N52 vs. N20 Engines
Before buying parts, you must know which engine your 528i has. This determines how many coils you need.
- 2007-2011 BMW 528i (E60): Uses the 6-cylinder N52 engine. You will need 6 ignition coils.
- 2012-2016 BMW 528i (F10): Uses the 4-cylinder turbocharged N20 engine. You will need 4 ignition coils.
Always verify your vehicle's production year to ensure you order the correct quantity.
Known Issues and Service Bulletins
BMW is aware of ignition coil issues in this model range. Technical Service Bulletin (TSB) SI B12 18 14 specifically addresses failures in the N52 engine (2007-2011 models). The bulletin notes that original-fitment Bosch coils could fail due to temperature changes. Because of this, BMW recommended that if one coil failed, all six Bosch coils should be replaced with the updated Delphi brand coils. This official recommendation is a strong indicator of Delphi's reliability for these engines.
Choosing the Right Aftermarket Ignition Coil
Not all aftermarket coils are created equal. For a sensitive German engine, the brand you choose matters. It is highly recommended to replace all coils at the same time with the same brand to ensure consistent performance.
Tier 1: OEM and Premium Aftermarket Brands
These brands are known to be original equipment (OEM) suppliers to BMW or have a reputation for equivalent quality. They are the safest choice for reliability and longevity.
- Delphi: The recommended replacement by BMW for the N52 engine due to issues with early Bosch coils. Delphi coils feature a metal sleeve for better heat resistance and are considered the top choice for a direct, reliable replacement.
- Bosch: An original supplier for BMW. While early versions had issues, newer Bosch coils are reliable. However, given the TSB, Delphi is often preferred by specialists for the N52 engine.
- NGK: A world-renowned leader in ignition systems. NGK coils are a high-quality, trusted alternative to OEM parts and a favorite among many BMW owners.
Tier 2: Quality Aftermarket Brands
These brands offer a good balance of price and quality, often meeting or exceeding OEM specifications. They are a solid choice if OEM brands are out of budget.
- Hitachi: A major Japanese manufacturer of automotive electronics with a reputation for quality.
- Standard Ignition (SMP): A long-standing brand in the aftermarket that produces reliable replacement parts.
- Walker Products: Known for engine management and fuel system components, offering dependable aftermarket options.
Tier 3: Economy Brands
These brands focus on providing the lowest price point. While functional, they may not offer the same durability or performance as premium brands. They can be a solution for a tight budget, but be aware that their lifespan may be shorter.
- DriveWire
- Holstein
- True Tech
- Global Parts
Ignition Coil Replacement Cost for 2007-2016 BMW 528i
The cost can vary based on the engine (4-cyl vs. 6-cyl) and the brands you choose. Labor at a repair shop is typically low for this job, as it is quick and easy.
| Part Type | Cost (Per Set) | Notes |
|---|---|---|
| New OEM/Premium (Delphi, Bosch, NGK) | $150 - $400 | Price depends on N20 (4) vs. N52 (6) engine. This is the most recommended option. |
| New Quality Aftermarket | $100 - $250 | A good balance of cost and reliability. |
| New Economy Aftermarket | $80 - $180 | Lowest cost, but may have a shorter lifespan. |
| Shop Labor | $100 - $200 | Typically 0.5 to 1.0 hour of labor. |
Frequently Asked Questions
Should I replace all ignition coils at once?
Yes. Ignition coils all operate under the same conditions for the same amount of time. If one has failed, the others are likely near the end of their service life. Replacing them all at once saves you from repeated repairs and ensures consistent engine performance.
How do I know which cylinder is misfiring?
The best way is to use an OBD-II scanner. It will read the fault code from your car's computer. Codes P0301 through P0306 correspond to the misfiring cylinder (e.g., P0301 is cylinder 1). If you don't have a scanner, you can swap the suspected bad coil with a coil from another cylinder. If the misfire code follows the coil to the new cylinder, you've found the faulty part.
Is it difficult to replace the ignition coils myself?
No, this is one of the easiest DIY jobs on a BMW 528i. The coils are located directly on top of the engine. The process involves removing a plastic engine cover, lifting a tab on the electrical connector, and pulling the coil straight out. No special tools are required, and many video tutorials are available online.
Are cheap, unbranded ignition coils a good idea?
It's generally not recommended for a BMW. While the initial price is low, cheaper coils often use lower-quality materials. This can lead to a short service life, forcing you to do the job again sooner. For this vehicle, it's best to invest in a quality OEM or premium aftermarket brand like Delphi, Bosch, or NGK for long-term reliability.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12138616153 12137594937 12137571643 12137551049
This is a pencil-style, 'coil-on-plug' ignition coil. The 2007-2011 528i (N52 engine) requires a set of six coils. The 2012-2016 528i (N20 engine) requires a set of four coils. The primary replacement part number, which supersedes many previous versions, is 12138616153.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- BMW 528i:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your BMW 528i Running Rough? It Could Be an Ignition Coil.
- Key Failure Symptoms
- Generation Differences: N52 vs. N20 Engines
- Known Issues and Service Bulletins
- Choosing the Right Aftermarket Ignition Coil
- Tier 1: OEM and Premium Aftermarket Brands
- Tier 2: Quality Aftermarket Brands
- Tier 3: Economy Brands
- Ignition Coil Replacement Cost for 2007-2016 BMW 528i
- Frequently Asked Questions
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