Ignition Service for BMW Z4 M Roadster S54 (2003-2008)

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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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Packaged by Turner - Corporate Logo
T#:23714967
Part#: NSERIESIGNCOILKT
In Stock
$ 191.99 USD
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Upgrade your BMW's engine performance with the Dinan Performance Ignition Coil Service Kit. These high-quality ignition coils are crafted to enhance ignition power, ensuring optimal engine performance and efficiency. Engineered for durability and reliability, these coils provide improved throttle response, smoother idle, and enhanced fuel efficiency. Benefit from the Dinan Performance Ignition Coil Service Kit, designed to unleash the true potential of your BMW's engine.
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Packaged by Turner - Corporate Logo
T#:583532
Part#: S54PISKT
In Stock
$ 277.99 USD
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$ 277.99 USD
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Every 60-80,000 miles, we recommend replacing your spark plugs to ensure your ignition system is running optimally. Over time carbon can build up around the head of the spark plug and decrease spark strength and effectiveness, leading to weaker fuel mixture detonation, misfires, and potential check engine lights. To prevent this, have put together our High-Performance Ignition Service Kits. These kits include new Bav Auto High-Performance Ignition Coils, new spark plugs, dielectric grease, and a BMW spark plug service label to keep track of when your spark plugs were replaced.

Bav Auto's Ignition coils feature core windings that have been modified to increase firepower and promote a faster, more efficient burn. This gives your BMW/MINI increased torque in the lower range of RPM and more horsepower in the upper range. Exact improvements depend on the current condition of your engine, but you'll definitely feel the difference. They'll also improve your fuel economy.

From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Packaged by Turner - Corporate Logo
T#:6196924
Part#: 12131712219TKT
In Stock
$ 241.99 USD
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$ 241.99 USD
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Restore your ignition system using high quality Bosch ignition coils and NGK spark plugs. Your ignition system will start to fail with age, which will ruin your fuel economy as well as your performance. This Turner Motorsport kit includes new coils, plugs, and hardware. This particular kit utilizes all quality aftermarket components.
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Delphi - Corporate Logo
T#:14742
Part#: 12138616153
In Stock
$ 24.99 USD
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$ 24.99 USD
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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).
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Performance Ignition Coil - N Series
10X Entries For Our Spin To Win Sweepstakes!
Turner Motorsport - Corporate Logo
T#:20320749
Part#: 12138616153T
In Stock
Sale - Save 10% $ 32.99
$ 29.69 USD
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Sale - Save 10% $ 32.99
$ 29.69 USD
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Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, Spark.) Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that give your engine the performance and aesthetic your looking for. Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engines health, performance and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy. Features and Benefits: Increased performance Direct fitment Signature Turner Blue finish
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Eldor - Corporate Logo
T#:29234309
Part#: 12138616153
In Stock
$ 33.99 USD
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$ 33.99 USD
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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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Bavarian Autosport - Corporate Logo
T#:578618
Part#: 5005
Ships on Aug 11, 2025
$ 29.99 USD
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$ 29.99 USD
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A simple yet effective upgrade, these Bav Auto High-Performance Ignition Coils feature modified core windings that offer increased firepower and promote a faster, more efficient burn. The result is greater low-end torque and increased horsepower in the mid to top-end. When used in a properly functioning engine, a noticeable difference can be felt. In addition to better torque and horsepower, fuel economy is also improved! These coils come with new spark plug boots. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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CTS - Corporate Logo
T#:5001916
Part#: CTS-IGN-008
Back Ordered
$ 27.99 USD
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$ 27.99 USD
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CTS Turbo is proud to announce its high-performance replacement ignition coil packs for the BMW vehicles. These are the perfect replacement or upgrade to your N20, N26, N52, N54, N55, N63, S63, S55, M52, M54, S54 engine to keep it running at its peak performance. Also compatible with R5x Mini Cooper vehicles.
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Turner Motorsport - Corporate Logo
T#:23383277
Part#: TIGNITION6KT
In Stock
Sale - Save 10% $ 197.99
$ 178.15 USD
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Sale - Save 10% $ 197.99
$ 178.15 USD
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Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, Spark.) Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that give your engine the performance and aesthetic your looking for. Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engines health, performance and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy. Features and Benefits: Increased performance Direct fitment Signature Turner Blue finish
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Bosch - Corporate Logo
T#:588121
Part#: 12138616153
In Stock
Sale - Save 5% $ 32.99
$ 31.34 USD
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Sale - Save 5% $ 32.99
$ 31.34 USD
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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 100,000 miles. Keep your ignition system in perfect order. Rubber integrated boot and snap-top cap. OEM Bosch Part Number: 0221504800
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Genuine BMW - Corporate Logo
T#:348491
Part#: 12138616153
In Stock
Sale - Save 5% $ 78.41
$ 74.49 USD
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Sale - Save 5% $ 78.41
$ 74.49 USD
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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).
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OEM NGK Spark Plugs - Set Of Six (DCPR8EKP/7415)
We Price Match - Give Us A Call or Chat!
NGK - Corporate Logo
T#:340536
Part#: DCPR8EKP-6
In Stock
$ 77.99 USD
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$ 77.99 USD
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Revitalize your BMW's performance with NGK's Original Spark Plugs, designed to address common issues like poor idle, reduced fuel efficiency, and engine misfires associated with worn-out spark plugs. These NGK plugs offer a solution by preventing electrode wear, which causes an oversized gap and weak sparks over time. They effectively tackle carbon buildup issues that can bridge the gap and hamper performance. Replacing worn-out plugs with NGK aftermarket units restores power, enhances fuel efficiency, and ensures a smoother idle for optimal engine performance.

Product Benefits:

  • Resolves poor idle, low fuel efficiency, and engine misfires
  • Prevents electrode wear for consistent spark
  • Reduces carbon buildup for improved performance
  • Restores power and fuel efficiency
  • Enhances engine smoothness and responsiveness
  • Ensures better harmony within the ignition system
  • Unlocks hidden horsepower and raises fuel economy
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CTA Tools - Corporate Logo
T#:640937
Part#: CTA7656
In Stock
$ 28.57 USD
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Use for cars requiring 16mm plug socket
S54 3.2L High-Performance Ignition Service Kit
10X Entries For Our Spin To Win Sweepstakes!
Turner Motorsport - Corporate Logo
T#:21966009
Part#: TMSS54IGNKT
In Stock
Sale - Save 6% $ 283.99
$ 268.27 USD
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Sale - Save 6% $ 283.99
$ 268.27 USD
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High-performance ignition kit for your S54 featuring spark plugs, Turner high-performance ignition coils, and dielectric grease to make sure you have no issues at your next maintenance interval! Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, and Spark). Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient, and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that gives your engine the performance and aesthetic you're looking for. All Turner Ignition coils are backed by a confidence-inspiring 2-year warranty. Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engine's health, performance, and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy. Features and Benefits: Increased performance New spark plugs and grease Direct fitment Signature Turner Blue ignition coils Ignition coils backed by a 2-year warranty
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CTA Tools - Corporate Logo
T#:640924
Part#: CTA4329
In Stock
$ 21.99 USD
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Swivel Spark Plug Socket 16MM

N-Series Performance Black Ignition Coils - Set Of Six
5X Entries For Our Spin To Win Sweepstakes!
Dinan - Corporate Logo
T#:20815175
Part#: D650-0002KT1
In Stock
$ 191.99 USD
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$ 191.99 USD
Free Shipping on orders $49 and up

For BMW M54 applications, coil styles vary between M or N depending on the vehicle's production date. Models produced up to September 2002 require the M series style coil, while those manufactured after September 2002 use N series style coils. It's crucial to visually compare and verify the correct coil needed for your vehicle before making a purchase.

Benefits:

  • Specific coil styles for different BMW M54 application dates
  • Helps ensure the right replacement part for your vehicle's coil
  • Visual verification recommended prior to purchase for compatibility
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Bavarian Autosport - Corporate Logo
T#:36337177
Part#: B50056KT
In Stock
New Item
$ 191.99 USD
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$ 191.99 USD
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Enhance your BMW's performance with the upgraded BAV Ignition Coil, designed to boost firepower and optimize engine efficiency. These coils boast modified core windings for a faster, more efficient burn, resulting in increased torque at lower RPMs and heightened horsepower in the upper range. While improvements depend on your engine's condition, these coils ensure noticeable enhancements in performance and potential fuel economy benefits.

Product Benefits:

Improved engine firepower and efficiency
Increased torque at lower RPMs
Enhanced horsepower in higher ranges
Potential improvement in fuel economy
Set of six for complete BMW Cooper replacement

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NGK Spark Plug - DCPR8EKP - E46 M3, MZ3 (S54), MZ4
We Price Match - Give Us A Call or Chat!
NGK - Corporate Logo
T#:338621
Part#: 7415
In Stock
Starting at $ 77.99 USD
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Starting at $ 77.99 USD
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NGK Laser Platinum Premium standard spark plug for E46 M3 (incl CSL), MZ3 01-02 (S54), MZ4

Select either a single plug or a full set of 6.

NGK has been one a top choice of automakers and mechanics since 1936 for obvious reasons. With manufacturing, quality control and consistency standards second to none, this is truly a name you trust. Turner Motorsport proudly carries the NGK brand with applications that cover all BMW/Mini models.

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OEM Bosch Ignition Coil - Set Of 6 - S54 BMW
We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:348133
Part#: 12137594937T6KT
In Stock
$ 155.99 USD
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$ 155.99 USD
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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.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Bremi - Corporate Logo
T#:340576
Part#: 12131712219
In Stock
$ 27.09 USD
Free Shipping on orders $49 and up
$ 27.09 USD
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Get your engine back to peak performance with a new ignition coil.

AFE - Corporate Logo
T#:28171497
Part#: 77-92001
Ships on Aug 6, 2025
15% off MSRP $ 65.00
$ 54.99 USD
Free Shipping on orders $49 and up
15% off MSRP $ 65.00
$ 54.99 USD
Free Shipping on orders $49 and up
Upgrade your vehicle’s ignition system with aFe POWER’s SCORCHER High-Performance Ignition Coils – a premium direct replacement for your factory coils. Our high-performance coils have a lower primary resistance than factory units, resulting in a high-energy spark that ensures complete combustion from idle to redline. Peak Output: Experience up to 20% more spark energy compared to your factory coils. SCORCHER Ignition Coils keep the pace with the demands of higher RPM ranges and at wide-open throttle, always ensuring your ignition system is performing at its best. Premium Direct Replacement Up to 20% More Spark Energy Increase Horsepower & Torque Improved Drivability & Smoother Idle Easier Cold Starts Longer Coil Life
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OEM Bosch Ignition Coil - Set of 6 - M54 S54 BMW
We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:340693
Part#: 12131712219
In Stock
$ 155.99 USD
Free Shipping
$ 155.99 USD
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Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.
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Genuine BMW - Corporate Logo
T#:375238
Part#: 12131712219KT2
Ships in 1-2 days
Sale - Save 5% $ 676.99
$ 642.90 USD
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Sale - Save 5% $ 676.99
$ 642.90 USD
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Often an oversight in maintenance, ignition components are also susceptible to wear and tear. Spark Plugs can accumulate carbon, reducing the spark intensity and it's ability to properly ignite the air/fuel mixture, leading to misfires and generally declining performance. Other ignition components, such as coils, boots, wires, caps, and rotors, can also wear out over time due to factors like heat and contamination, preventing the current from reaching the spark plug.

To start over fresh with all new components, we now offer these Ignition Service Kits.

This kit includes all Genuine BMW components to ensure perfect operation and exceptionally high quality.

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CTA Tools - Corporate Logo
T#:1241318
Part#: CTA2030
Ships Jul 15, 2025
$ 81.99 USD
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$ 81.99 USD
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Get the complete set and be ready.


Dinan Performance Ignition Service Kit
5X Entries For Our Spin To Win Sweepstakes! Call In, Chat, Or Email, For Best Price! Limited Time Only!
Dinan - Corporate Logo
T#:8294099
Part#: D650-0004KT4
In Stock
$ 273.99 USD
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$ 273.99 USD
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Dinan Performance Ignition Service Kit is the ideal solution for BMW owners experiencing issues like sputtering, rough idle, hesitation during acceleration, misfires, and a check engine light. This comprehensive kit addresses common ignition system problems and ensures optimal engine performance. When one ignition coil fails, it is highly recommended to replace the spark plugs simultaneously to prevent future complications and ensure a reliable connection.

Benefits:

  • Complete Ignition Solution: Includes everything needed for a thorough ignition system overhaul, promoting efficient engine operation.
  • Direct Plug-and-Play: Easy installation with no modifications required, making it suitable for DIY enthusiasts and professional mechanics alike.
  • Enhanced Performance: Offers up to 10% more energy output than stock components, resulting in improved acceleration and throttle response.
  • Durable Design: Features a blue housing with the Dinan logo, providing a stylish upgrade while ensuring longevity and reliability.
  • Prevents Future Issues: Replacing both coils and plugs helps to eliminate misfires and maintain optimal engine function.

Upgrade your BMW's ignition system with the Dinan Performance Ignition Service Kit for improved performance and peace of mind on the road.

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NGK - Ignition Coil - N20 N52 N54 N55 S55 S54 N62 S62 M54
We Price Match - Give Us A Call or Chat!
NGK - Corporate Logo
T#:35289800
Part#: 12138616153
In Stock
$ 59.99 USD
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$ 59.99 USD
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Sunex - Corporate Logo
T#:641915
Part#: 8845D
Ships in 7 Business Days
$ 79.99 USD
Free Shipping
$ 79.99 USD
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Complete set of spark plug sockets.

Baum Tools - Corporate Logo
T#:2854671
Part#: B121220
Ships in 6 Business Days
$ 49.99 USD
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Ignition Coil - Set of 8
We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:348179
Part#: 12131712219T8KT
In Stock
$ 207.99 USD
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$ 207.99 USD
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Genuine BMW - Corporate Logo
T#:38216
Part#: 12131437986
In Stock
Sale - Save 10% $ 8.99
$ 8.12 USD
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Sale - Save 10% $ 8.99
$ 8.12 USD
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Genuine BMW Locking Mechanism
This item fits the following BMW Chassis:
E60 M5,E63 M6,E46 M3,E70 X5M,E71 X6M,E82 1M Coupe,E85 Z4M,E53 48IS,E39,E46,E53 X5 X5,E63,E65,E70 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16,F22,F25 X3,F26 X4 X4,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83

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Schwaben - Corporate Logo
T#:369968
Part#: SP-05-12P
In Stock
Sale - Save 25% $ 16.99
$ 12.74 USD
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Sale - Save 25% $ 16.99
$ 12.74 USD
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14mm deep socket, perfect for long stud fasteners and recessed locations.
AFE - Corporate Logo
T#:28171498
Part#: 77-92001-MC
In Stock
16% off MSRP $ 321.99
$ 269.99 USD
16% off MSRP $ 321.99
$ 269.99 USD
Upgrade your vehicle’s ignition system with aFe POWER’s SCORCHER High-Performance Ignition Coils – a premium direct replacement for your factory coils. Our high-performance coils have a lower primary resistance than factory units, resulting in a high energy spark that ensures complete combustion from idle to redline. Peak Output: Experience up to 20% more spark energy compared to your factory coils. SCORCHER Ignition Coils keep the pace with the demands of higher RPM ranges and at wide-open throttle, always ensuring your ignition system is performing at its best. Premium Direct Replacement Up to 20% More Spark Energy Increase Horsepower & Torque Improved Drivability & Smoother Idle Easier Cold Starts Longer Coil Life
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Gear Wrench - Corporate Logo
T#:587003
Part#: KDT164
In Stock
$ 10.99 USD
Free Shipping on orders $49 and up
Gauge and accurately alter the gap of your spark plugs.