Ignition Service for BMW 4 Series G22 (2021+)

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It's important to keep your ignition system operating properly to avoid further complications in the future. Here at Turner Motorsport, we offer full ignition service kits if you'e going to overhaul your entire ignition system, and individual components if you've narrowed down your problem already.

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Genuine BMW - Corporate Logo
T#:577515
Part#: 12120040551-6KT
In Stock
$ 157.99 USD
Free Shipping
$ 157.99 USD
Free Shipping
Genuine BMW - Corporate Logo
T#:577514
Part#: 12120040551-4KT
In Stock
$ 104.99 USD
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$ 104.99 USD
Free Shipping

Enhance your BMW's performance with this new replacement spark plug designed for the B58/46 engine. Recommended for replacement at 60,000-mile intervals or at 30,000 miles for tuned engines, these spark plugs ensure optimal engine efficiency and ignition reliability.

Benefits:

  • Specifically designed for B58/46 engines in BMW vehicles
  • Ensures optimal engine performance and ignition reliability
  • Recommended replacement at 60,000-mile intervals or 30,000 miles for tuned engines
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Genuine BMW - Corporate Logo
T#:28570848
Part#: 12138643360KT12
Ships in 3 Business Days
$ 669.99 USD
Free Shipping on orders $49 and up
$ 669.99 USD
Free Shipping on orders $49 and up

Sluggish acceleration, misfires, and rusty terminals are symptoms of a worn coil. Located on the top of your engine, these coils should be inspected and replaced as needed or every 60,000 miles.

If you are replacing any aspect of your ignition system, it's best to replace all serviceable components. This kit includes ignition coils and spark plugs for a comprehensive service that is guaranteed to last.

Kit Includes:

6 Genuine BMW Ignition Coils - 12138643360 6 Genuine BMW Spark Plugs - 12122455258 Genuine BMW Spark Plug Service Indicator Label - 01399791390

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Genuine BMW - Corporate Logo
T#:577359
Part#: 12138643360KT4
Ships in 3 Business Days
$ 682.99 USD
Free Shipping
$ 682.99 USD
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Genuine BMW - Corporate Logo
T#:577356
Part#: 12138643360KT
Ships in 3 Business Days
$ 343.99 USD
Free Shipping
$ 343.99 USD
Free Shipping
Genuine BMW - Corporate Logo
T#:30861156
Part#: 12138643360GKT
Ships in 3 Business Days
$ 448.99 USD
Free Shipping on orders $49 and up
If your BMW's mileage is getting up there, be sure to keep your ignition system in check. Whether you currently have a misfire or you're just doing preventative maintenance, this kit is perfect and includes everything you need to restore performance! The kit includes: 4 Genuine BMW Coils with locks 4 Genuine BMW spark plugs 1 packet of American Grease Stick dielectric grease
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Dinan Iridium Spark Plug - Heat Range 12 (NGK 8) - BMW B48TU2 / B58TU...
For vehicles with the Gen3 B48 (B48TU2 / B48P / B48R) - Not compatible with earlier eng... For vehicles with the Gen3 B58 (B58TU2 / B58N / B58X) - Not compatible with earlier eng...
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Dinan - Corporate Logo
T#:56327172
Part#: D640-0003
Ships on Oct 12, 2026
New Item
8% off MSRP $ 23.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 21.99 USD
Free Shipping
8% off MSRP
$ 23.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 21.99 USD
Free Shipping
Dinan Iridium Spark Plugs are an excellent upgrade for tuned, and even stock engines. Our spark plugs are made from Iridium - one of the strongest materials available. They last longer than other materials with higher melting points, run cooler, resist preignition, and even require less voltage to produce a strong spark. The iridium electrode with its copper core is harder and stronger than other materials, can dissipate heat more easily, and is better protected from melting, cracking, and other limitations found with standard plugs. Dinan spark plugs are great for high boost, high cylinder pressure, high cylinder temperatures, and high-power situations, and they pair nicely with a set of Dinan ignition coils, where applicable. However, they are not only for tuned and higher output vehicles that may benefit from a plug cooler than the factory heat range - they also are applicable to non-tuned / stock vehicles as well! The D640-0003 spark plug applies to the following engines: B48 TU B58 TU2 (Gen 2 B48 Gen 3 B58)
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