Ignition Coil Guide for the 2017-2022 BMW 750Li xDrive
Address engine misfires and restore the performance of your twin-turbo V8 by understanding your ignition coil options.
- Your 2017-2022 750Li xDrive uses eight individual coil-on-plug ignition coils.
- Symptoms of failure include a flashing check engine light, engine stuttering, and loss of power.
- It is highly recommended to replace all eight coils and spark plugs at the same time for best results.
- This is a straightforward DIY replacement that can be done with basic tools in about 1.5 hours.
Is Your 750Li xDrive Running Rough? It Could Be an Ignition Coil.
A failing ignition coil is a common issue on many modern vehicles, including high-performance BMWs. The N63 engine in your 750Li xDrive generates significant heat, which can shorten the lifespan of electronic components like ignition coils. When a coil starts to fail, it can't produce the strong spark needed for complete combustion, leading to a variety of noticeable engine problems. Ignoring these symptoms can lead to more serious issues, including damage to your expensive catalytic converters.
Flashing Check Engine Light?
If your check engine light is flashing, it indicates a severe misfire. Unburned fuel is entering the exhaust, which can quickly overheat and destroy the catalytic converters. Avoid driving the vehicle and have it inspected as soon as possible.
Choosing the Right Aftermarket Ignition Coil
When replacing ignition coils, you don't have to go back to the dealership. Quality aftermarket brands can provide the same level of performance and reliability for a fraction of the price. Here’s a look at the available options:
- OEM Supplier Brands (Bosch, Delphi, Eldor): These companies often manufacture the original parts for BMW. Choosing a coil from one of these brands, like Delphi or Eldor, is as close to getting a genuine part as you can without the dealer markup. They are an excellent choice for guaranteed fit and performance.
- Premium Aftermarket (Standard Ignition): Brands like Standard Ignition (SMP) produce high-quality replacement parts that are engineered to meet or exceed original specifications. They are a trusted choice in the repair industry and a reliable option for your BMW.
- Standard Aftermarket (Holstein): These brands offer a great balance of value and quality. For a daily-driven vehicle, a Holstein coil can be a cost-effective solution to get your engine running smoothly again.
Pro Tip: Replace Coils and Plugs Together
It is highly recommended to replace all eight ignition coils at the same time. Coils are exposed to the same heat and wear, so if one has failed, others are likely to follow. It is also best practice to replace all eight spark plugs at the same time to ensure a complete and efficient ignition system refresh.
Cost to Replace Ignition Coils on a 2017-2022 BMW 750Li xDrive
| Part Type | Cost per Coil | Cost for 8 Coils |
|---|---|---|
| New OEM (Dealer) | $100 - $150 | $800 - $1200 |
| New Aftermarket | $41 - $123 | $328 - $984 |
| Shop Labor | $150 - $250 | |
Cost estimates are approximate and may vary based on location and supplier.
Frequently Asked Questions
How many ignition coils does my 2017-2022 BMW 750Li xDrive have?
Your vehicle's V8 engine has eight ignition coils, one for each cylinder.
Is it difficult to replace the ignition coils myself?
No, this is a DIY-friendly job for someone with basic tools. The coils are located on top of the engine and are easily accessible after removing the engine cover. Each coil is held by a single bolt and an electrical connector.
Should I replace all eight coils if only one is bad?
Yes. Ignition coils wear out at a similar rate. Replacing them all at once saves you from future repeat repairs and ensures consistent engine performance. Many technicians recommend this approach to prevent future issues.
Do I need to replace my spark plugs when I replace my ignition coils?
It is a strong recommendation. Worn spark plugs can put extra strain on new ignition coils, causing them to fail prematurely. Replacing them together ensures the entire ignition system is in top condition.
Were there any recalls for the ignition coils on this BMW?
No specific recalls for ignition coils were found for the 2017-2022 BMW 750Li xDrive in searches of NHTSA data. However, the N63 engine family has had various service actions and customer care packages over the years for other issues.
Technical Specifications
OEM Part Numbers: 12138616153 12137594937 12138692611
Coil-on-plug design; one required per cylinder. Compatible with the N63TU2 and N63TU3 twin-turbo V8 engines.
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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 750Li xDrive: