BMW Ignition Coils

Transform your N55-powered BMW with the Turner Motorsport B58 Ignition Coil Conversion Kit—the ultimate solution for ignition system reliability and performance. Designed to eliminate the notorious misfires and power loss caused by factory OE pencil-style ignition coils, this kit is a game-changer for stock and modified vehicles alike. Whether you're chasing more power or improved drivability, the B58 ignition coils deliver up to 2.3x more spark energy, unleashing the full potential of your engine.

Why upgrade? The answer is simple: B58 ignition coils outperform all other ignition upgrades on the market with unparalleled spark energy and reliability. Ideal for high-performance builds or daily drivers, this kit eliminates common ignition problems while supporting increased power demands from software tunes like MHD or BM3. Plus, with the included plug-and-play wiring harness and proprietary boots, installation is seamless—no cutting or splicing is required.

Features:

Up to 2.3x More Spark Energy: Maximizes overall performance, offering sufficient output for heavily modified engines. Plug-and-Play Installation: Includes custom brackets, wiring harnesses, and boots designed for factory mounting locations—no modifications needed. DME Compatibility: Compatible with factory engine management software for hassle-free integration. Rugged Durability: Bolt-on brackets are precision-machined from 6061-T6 aluminum with a sleek black anodized finish for a premium look and long-lasting performance. Proprietary Design: Boots feature a built-in 1k OHM resistor to prevent electrical contact failures commonly seen in other kits. Kit Contents:

(6) Turner Motorsport B58 Ignition Coils (6) Turner Motorsport B58 Ignition Coil Conversion Boots (6) Turner Motorsport B58 Ignition Coil Conversion Wiring Harnesses (3) Turner Motorsport B58 Ignition Coil Conversion Brackets Optional Kit Selections:

Spark Plugs: Bosch ZGR6STE2 (OEM) NGK 97506 (One Step Colder) Spark Plug Socket: Schwaben 14mm 12pt Magnetic Socket Schwaben 14mm 12pt Swivel Socket Turner Motorsport offers a comprehensive installation guide, including detailed removal instructions and high-resolution images. Visit the Installation Tab for the step-by-step guide to completing your ignition system upgrade.

Say goodbye to misfires and hello to unparalleled ignition performance with the Turner Motorsport B58 Ignition Coil Conversion Kit. Designed with precision and engineered for reliability, it’s the ultimate upgrade for your N55-powered BMW!

If your engine is throwing a misfire code, there's a good chance the ignition coil is on its way out. Ignition coils are key components in your engine's ignition system, responsible for generating the spark that fuels the combustion process. When they fail, you can experience weak or intermittent sparks, leading to misfires, decreased engine power, and poor overall performance.

If you’re looking to address ignition problems or simply upgrade your setup, consider our High-Performance Ignition Coils! Our ignition coils are engineered to deliver superior spark energy, ensuring smoother, more efficient combustion. Not only will they improve engine performance, but their vibrant blue design and TURNER branding will also give your engine bay a sleek, high-performance look.

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 & Benefits:

Increased performance! Our performance ignition coils offer a much-needed increase in spark energy, granting your engine a stronger, more consistent spark. Direct plug-and-play upgrade for BMWs equipped with N63B44T3 (N63B), S63B44T4 (S63M), and S68 (S68T). The coil body is finished in our signature "Turner blue" and features a laser-etched, resin-coated Turner insignia. The spark plug boot is constructed from durable rubber and is pre-lubricated with dielectric grease for easy installation. When replacing your ignition coils, it's also a good time to change out those old spark plugs. Our Performance Ignition Service Kit includes these ignition coils and "one step colder" NGK spark plugs for a more comprehensive ignition system service.

Note: Not all N63B and S63M applications use the same ignition coil. Many S63B44T4/S63M applications—including the F90 M5 and F91/F92/F93 M8—use the older "N Series" ignition coil architecture. If your N63/S63-equipped BMW utilizes the older "pencil style" ignition coil, you can find the Turner Motorsport Performance version HERE.

If you are experiencing misfires or rough idle issues, the cause could be a failing ignition coil. Bosch Ignition Coils are the perfect OEM replacement to restore perfect operation to your ignition system.

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!

For the following BMW engines: M42 M60 M62 M50 S50