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Ignition

Your BMW's ignition system is critical for smooth engine operation. This category contains parts used in the BMW ignition system, including spark plugs, ignition coils, spark plug wires and boots, ignition rotors and caps, distributors and distributor caps. On most 1991 and later model BMWs, your car has what's known as a coil-on-plug system, where each cylinder has its own ignition coil that sits directly atop the spark plug (so you won't have spark plug wires on those BMWs.) A fresh set of spark plugs is an essential part of any BMW engine tune up.

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Eldor - Corporate Logo
T#:29234309
Part#: 12138616153
In Stock
$ 43.99 USD
Free Shipping on orders $49 and up

Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code but not always a check engine light. A misfire code may be related to an ignition coil but could be from other things as well. Sometimes a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.

This is the current replacement for some BMW 6 and 8-cylinder engines built in the late 2000s and after. BMW has made numerous changes to ignition coil part numbers in recent years but has approved this part number to work in the vehicles listed below. It's listed as a replacement coil for N20, N55, and S55 engines. In March 2015 BMW approved it for N51/N52 engines. This part number replaces the previous BMW part number 12137594937 for the cars listed below.

Sold per coil. Includes boot and connector.

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Eldor - Corporate Logo
T#:641259
Part#: 12138657273
In Stock
$ 34.99 USD
Free Shipping on orders $49 and up
Used in a wide variety of BMW engines to ensure proper spark plug operation.
Eldor - Corporate Logo
T#:590050
Part#: 12138643360
In Stock
$ 39.99

This product was last offered at the strikethrough price on
06-15-2026

$ 36.76 USD
Free Shipping on orders $49 and up
$ 36.76 USD
Free Shipping on orders $49 and up

Revitalize your BMW's performance with Eldor ignition coils. Sluggish acceleration, misfires, and rusty terminals may indicate a worn coil. Located on the engine's top, these coils require inspection and replacement every 60,000 miles or as needed. Ensure your ignition system is in optimal condition for peak performance.

  • Revitalize sluggish acceleration
  • Address misfires and rusty terminals
  • Inspection and replacement every 60,000 miles
  • Harmonize ignition system components
  • Unlock hidden horsepower
  • Improve fuel economy
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CTA Tools - Corporate Logo
T#:640924
Part#: CTA4329
In Stock
$ 24.28 USD
Free Shipping on orders $49 and up
Swivel Spark Plug Socket 16MM

CTA Tools - Corporate Logo
T#:584137
Part#: CTA7654
In Stock
$ 35.72 USD
Free Shipping on orders $49 and up
Perfect for getting out spark plugs in hard to reach areas.
Eldor - Corporate Logo
T#:30927351
Part#: 12138692611
In Stock
$ 61.08 USD
Free Shipping on orders $49 and up
$ 61.08 USD
Free Shipping on orders $49 and up
Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code but not always a check engine light. A misfire code may be related to an ignition coil but could be from other things as well. Sometimes a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares. When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand and many other high-quality OEM brands with pride and has the parts you need to complete your next project with confidence. Sold per coil. Includes boot and connector.
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Karlyn - Corporate Logo
T#:381414
Part#: 12121311735
Ships in 7 Business Days
$ 249.99 USD
Free Shipping
$ 249.99 USD
Free Shipping
Complete set of plug wires

Performance Tool - Corporate Logo
T#:2242226
Part#: W80533
Ships in 2 Business Days
$ 20.25 USD
Free Shipping on orders $49 and up
Extended socket length reaches confined areas.

Sunex - Corporate Logo
T#:391150
Part#: SUU884506
In Stock
9% off MSRP $ 31.99

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

$ 28.99 USD
Free Shipping on orders $49 and up
9% off MSRP
$ 31.99

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

$ 28.99 USD
Free Shipping on orders $49 and up
3/8" drive socket with 5/8" opening for most spark plugs
Karlyn - Corporate Logo
T#:373953
Part#: 12121733006
Ships in 2 Business Days
$ 323.50 USD
Free Shipping
$ 323.50 USD
Free Shipping
For cylinders 7-12
Karlyn - Corporate Logo
T#:593968
Part#: 12121705716
Ships in 2 Business Days
$ 124.36 USD
Free Shipping on orders $49 and up
If your vehicle has developed a misfire or is having ignition problems it could be the ignition cables. Replace yours today to bring back the functionality of your ignition system.


Karlyn - Corporate Logo
T#:593964
Part#: 12121705718
Ships in 2 Business Days
$ 106.60 USD
Free Shipping
$ 106.60 USD
Free Shipping
Replacement Ignition Wire Set from STI-Karlyn
Karlyn - Corporate Logo
T#:373952
Part#: 12121733020
Ships in 2 Business Days
$ 324.18 USD
Free Shipping
$ 324.18 USD
Free Shipping
For cylinders 1-6
Karlyn - Corporate Logo
T#:593963
Part#: 12120407854
Ships in 2 Business Days
$ 101.63 USD
Free Shipping on orders $49 and up
Replacement Spark Plug Wire Set from STI-Karyln

Karlyn - Corporate Logo
T#:593961
Part#: 12121360603
Ships in 2 Business Days
$ 50.39 USD
Free Shipping on orders $49 and up
Replacement Spark Plug Wire Set With Long Coil Wire from STI Karlyn

Karlyn - Corporate Logo
T#:369621
Part#: 12121247523
Ships in 1-2 days
$ 181.99 USD
Free Shipping
$ 181.99 USD
Free Shipping
Replace worn out wires and restore performance.
Performance Tool - Corporate Logo
T#:1855998
Part#: W80535
Ships in 3 Business Days
$ 1.99 USD
Free Shipping on orders $49 and up
Easy to read markings to set gaps quickly and easily.

Eldor - Corporate Logo
T#:54852008
Part#: 12139453463
In Stock
New Item
$ 77.99 USD
Free Shipping on orders $49 and up
$ 77.99 USD
Free Shipping on orders $49 and up
Sluggish acceleration, misfires, rough idling, poor fuel economy, and check engine lights 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 to keep your ignition system in perfect order
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CTA Tools - Corporate Logo
T#:641657
Part#: CTA3238
In Stock
$ 3.99 USD
Free Shipping on orders $49 and up
Always check gap on your new spark plugs

CTA Tools - Corporate Logo
T#:641654
Part#: CTA3235
In Stock
$ 1.99 USD
Free Shipping on orders $49 and up

CTA Tools - Spark Plug Gapper is an essential tool for accurately setting and measuring spark plug gaps, ensuring optimal engine performance. This precision tool is designed for both professional and DIY mechanics, providing reliable gap adjustments for a variety of engine applications.

  • Versatile Measurement Range: The ramp gauge measures gaps from .020 to .100 inches (0.50 to 2.5 mm), accommodating a wide range of spark plug specifications.
  • Precision Engineering: Engineered to deliver accurate gap settings, improving engine efficiency and performance.
  • Made in the USA: Crafted with high-quality materials to ensure durability and long-lasting performance.
  • Easy to Use: Simple design makes gap adjustments quick and straightforward, enhancing convenience in any workshop or garage setting.

Upgrade your toolset with the CTA Tools - Spark Plug Gapper to achieve precise spark plug gaps and optimize your engine’s performance.

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Hitachi - Corporate Logo
T#:48850063
Part#: 12138657273
Ships in 7 Business Days
$ 53.99 USD
Free Shipping on orders $49 and up
Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code, but not always a check engine light. A misfire code may be related to an ignition coil, but could be from other things as well. ometimes, a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.
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Hitachi - Corporate Logo
T#:48850056
Part#: 12137619385
Ships in 7 Business Days
$ 64.99 USD
Free Shipping on orders $49 and up
Get your engine's spark back with new ignition coils.
Hitachi - Corporate Logo
T#:48815460
Part#: 12137594596
Ships in 7 Business Days
$ 56.99 USD
Free Shipping on orders $49 and up
$ 56.99 USD
Free Shipping on orders $49 and up
Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil, the spark plug is not burning the air/fuel mixture properly, and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code, but not always a check engine light. A misfire code may be related to an ignition coil, but could be from other things as well. Sometimes, a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.
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Hitachi - Corporate Logo
T#:48815451
Part#: 12131712219
Ships in 7 Business Days
$ 57.99 USD
Free Shipping on orders $49 and up
$ 57.99 USD
Free Shipping on orders $49 and up
Get your spark back with new ignition coils.
Hitachi - Corporate Logo
T#:48815450
Part#: 12218591724
Ships in 7 Business Days
$ 124.99 USD
Free Shipping on orders $49 and up
Distributes power to glow plugs to preheat them for ignition.
Karlyn - Corporate Logo
T#:593956
Part#: 12121279550
Ships in 2 Business Days
$ 100.78 USD
Free Shipping on orders $49 and up
Keep your ignition system in prime shape with this set of spark plug wires from ECS Tuning. These replacement wires offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.
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Karlyn - Corporate Logo
T#:593965
Part#: 12121722253
Ships in 2 Business Days
$ 543.19 USD
Free Shipping on orders $49 and up
Complete OEM style with plastic loom to keep wires nice & neat. Keep your ignition system in prime shape with this set of spark plug wires from ECS Tuning. These replacement wires from Bosch offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.
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Karlyn - Corporate Logo
T#:593967
Part#: 12121742888
Ships in 2 Business Days
$ 248.71 USD
Free Shipping on orders $49 and up
These replacement wires from STI offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.
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Karlyn - Corporate Logo
T#:593966
Part#: 12121742887
Ships in 2 Business Days
$ 246.92 USD
Free Shipping on orders $49 and up
Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.