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

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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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OEM Delphi Ignition Coil - N20 N52 N54 N55 S55 S54 N62 S62 M54 ...
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Delphi - Corporate Logo
T#:14742
Part#: 12138616153
In Stock
$ 48.99

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01-14-2026

$ 28.99 USD
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$ 28.99 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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Eldor Ignition Coil - 12138616153
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Eldor - Corporate Logo
T#:29234309
Part#: 12138616153
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$ 43.99 USD
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$ 43.99 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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BMW Ignition Coil with Spark Plug Connector (ELDOR)
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Eldor - Corporate Logo
T#:641259
Part#: 12138657273
In Stock
$ 34.99 USD
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Used in a wide variety of BMW engines to ensure proper spark plug operation.

OEM Bosch Ignition Coil - N20 N52 N54 N55 S55 S54 N62 S62 M54 ...
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Bosch - Corporate Logo
T#:588121
Part#: 12138616153
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$ 34.99 USD
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$ 34.99 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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N-Series Ultimate Performance Ignition Coil - Red - Set Of Six ...
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Packaged by Turner - Corporate Logo
T#:23714967
Part#: NSERIESIGNCOILKT
In Stock
$ 196.99 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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OEM NGK Spark Plugs - Set Of Six (DCPR8EKP/7415)
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NGK - Corporate Logo
T#:340536
Part#: DCPR8EKP-6
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$ 107.99 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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Bremi Ignition Coil
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Bremi - Corporate Logo
T#:340576
Part#: 12131712219
In Stock at Vendor
$ 28.87

This product was last offered at the strikethrough price on
12-10-2025

$ 25.43 USD
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$ 25.43 USD
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Get your engine back to peak performance with a new ignition coil.
Genuine BMW Ignition Coil - N20 N52 N54 N55 S55 S54 N62 S62 M54 ...
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Genuine BMW - Corporate Logo
T#:348491
Part#: 12138616153
In Stock
14% off MSRP $ 100.05

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

$ 85.99 USD
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14% off MSRP
$ 100.05

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

$ 85.99 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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OEM Bosch Ignition Coil - Set Of 6 - S54 BMW
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Bosch - Corporate Logo
T#:348133
Part#: 12137594937T6KT
In Stock
$ 185.99 USD
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$ 185.99 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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OEM Starter Motor - E46 M3 2001-2006
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Valeo - Corporate Logo
T#:2988
Part#: 12417835735
In Stock
$ 400.99

This product was last offered at the strikethrough price on
05-07-2026

$ 293.99 USD
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This is the starter motor for BMW E46 M3 2001-2006 is an OEM Valeo unit.

This item fits the following BMWs:
2001-2006 E46 BMW M3. M3 Convertible
2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe
2005-2008 E85 BMW Z4 M Roadster Z4 M Coupe
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Ignition Coil With Spark Plug Connector
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Genuine BMW - Corporate Logo
T#:16441620
Part#: 12135A06753
Ships in 1-2 days
10% off MSRP $ 91.99

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

$ 82.99 USD
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10% off MSRP
$ 91.99

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

$ 82.99 USD
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Used in a wide variety of BMW engines to ensure proper spark plug operation. When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.
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High-Performance Ignition Service Kit - BMW E46 Z3/Z4 S54 3.2L ...
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Packaged by Turner - Corporate Logo
T#:583532
Part#: S54PISKT
In Stock
Sale - Save 20% $ 291.99

This product was last offered at the strikethrough price on
05-03-2026

$ 233.92 USD
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Sale - Save 20%
$ 291.99

This product was last offered at the strikethrough price on
05-03-2026

$ 233.92 USD
Free Shipping

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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NGK Spark Plug - DCPR8EKP - E46 M3, MZ3 (S54), MZ4
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NGK - Corporate Logo
T#:338621
Part#: 7415
In Stock
Starting at $ 107.99 USD
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Starting at $ 107.99 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 - M54 S54 BMW
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Bosch - Corporate Logo
T#:340693
Part#: 12131712219
In Stock
$ 185.99 USD
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$ 185.99 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 Spark Plug Gasket - S54
6 required
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Genuine BMW - Corporate Logo
T#:348831
Part#: 11127831271
In Stock
$ 41.99 USD
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$ 41.99 USD
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When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.
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Genuine BMW NGK Spark Plug - E46 M3, E85/86 S54
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Genuine BMW - Corporate Logo
T#:7098
Part#: 12120022902
In Stock
8% off MSRP $ 38.99

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

$ 35.99 USD
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8% off MSRP
$ 38.99

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

$ 35.99 USD
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GENUINE BMW ENGINE ELECTRICAL SPARK PLUG 12120022902

We also stock NGK E46 M3 Spark Plugs at a discounted price.

Fits BMW Engines including:
S54

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Genuine BMW NGK Spark Plugs Set (6) - E46 M3, E85/86 S54
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Genuine BMW - Corporate Logo
T#:371926
Part#: 12120022902
In Stock
$ 215.99 USD
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$ 215.99 USD
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Standard replacement Genuine BMW Spark plug set for S54 engines which came in the E46 M3 and Z4 M Coupe & Roadster.
Bosch Remanufactured Starter - E46 M3, S54
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Bosch - Corporate Logo
T#:373451
Part#: 12417835735KTBOS
Ships in 7 Business Days
$ 366.99 USD
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$ 366.99 USD
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This starter offers reliable performance at a fraction of the cost of a new unit, providing peace of mind and ensuring your BMW starts smoothly every time. This remanufactured starter from Bosch will allow your car to start like it is new. Includes $70 core charge. 
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Genuine BMW Ignition Service Kit - E46 M3, Z3/4 S54 3.2L
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Genuine BMW - Corporate Logo
T#:375238
Part#: 12131712219KT2
In Stock
$ 720.99 USD
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$ 720.99 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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S54 Ignition Service Kit
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Packaged by Turner - Corporate Logo
T#:6196924
Part#: 12131712219TKT
In Stock
$ 302.99 USD
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$ 302.99 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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NGK - Ignition Coil - N20 N52 N54 N55 S55 S54 N62 S62 M54
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NGK - Corporate Logo
T#:35289800
Part#: 12138616153
In Stock at Vendor
$ 59.99

This product was last offered at the strikethrough price on
05-07-2026

$ 58.99 USD
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$ 58.99 USD
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Steering Lock - Z4
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Genuine BMW - Corporate Logo
T#:56588
Part#: 32306763447
Ships in 9 Business Days
3% off MSRP $ 236.99

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

$ 229.99 USD
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3% off MSRP
$ 236.99

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

$ 229.99 USD
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Genuine BMW Steering Lock
This item fits the following BMW Chassis:
E85 Z4M,E85 Z4,E86 Z4

Genuine BMW Hex Bolt With Washer 07119905400
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Genuine BMW - Corporate Logo
T#:6396
Part#: 07119905400
In Stock
$ 2.99 USD
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$ 2.99 USD
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Genuine BMW Hex Bolt With Washer
This item fits the following BMW Chassis:
E36 M3,E39 M5,E60 M5,E63 M6,E46 M3,E70 X5M,E71 X6M,E82 1M Coupe,E85 Z4M,E53 48IS,E30,E34,E36,E38,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,i12

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Ignition Coil - Set of 8
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Bosch - Corporate Logo
T#:348179
Part#: 12131712219T8KT
In Stock
$ 247.99 USD
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$ 247.99 USD
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Genuine BMW Locking Mechanism - 12131437986
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Genuine BMW - Corporate Logo
T#:38216
Part#: 12131437986
In Stock
$ 10.99 USD
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$ 10.99 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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Genuine BMW Spark Plug Service Indicator Label - BMW
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Genuine BMW - Corporate Logo
T#:362838
Part#: 01399791390
In Stock
$ 3.61 USD
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Stick this label in a conspicuous place to act as a reminder of your service history. Documenting when your BMW's sparks plugs have been swapped helps you keep track of vital maintenance!
Hitachi Ignition Coil - BMW M54 S54 N62 N73
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Hitachi - Corporate Logo
T#:48815451
Part#: 12131712219
Ships in 6 Business Days
New Item
$ 57.99 USD
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$ 57.99 USD
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Get your spark back with new ignition coils.

Hitachi Ignition Coil With Spark Plug Connector - BMW N54 N55 N62 N63...
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Hitachi - Corporate Logo
T#:48850063
Part#: 12138657273
Ships in 6 Business Days
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$ 53.99 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. 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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BMW - Start/Ignition/Glow plug relay
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Meyle - Corporate Logo
T#:40342871
Part#: 12135A06753
Special Order: No Guaranteed ETA
$ 58.99 USD
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This BMW/MINI ignition coil is designed with enhanced core windings to boost spark energy and promote a quicker, more efficient combustion. The result is improved low-end torque and increased horsepower at higher RPMs. While the exact gains depend on your engine’s condition, noticeable performance improvements and better fuel efficiency can be expected.
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