S85 Ignition Service Kit
- Mfg Part #
- 056059LA02KT2
- ECS Part #
- ES#4883379
- Brand
-
This product was last offered at the strikethrough price on
05-02-2026
Free Shipping
Product Details
Designed with the do-it-yourself enthusiast in mind, this comprehensive kit includes everything you need to overhaul your ignition system! By providing it all for you in a single click, we've made it easier than ever to get the quality replacement matching components you need when servicing your ignition system.
If you're experiencing misfires, poor fuel economy, reduced engine power, or ignition-related DTCs, a failing ignition coil is the likely culprit. Late-model BMWs utilize a coil-on-plug ignition system, with each cylinder receiving its own coil and spark plug to ensure efficient ignition. When an ignition coil fails, its corresponding cylinder receives no spark and begins to misfire. A misfiring engine may stumble at idle, hesitate upon acceleration, or emit an unpleasant fuel smell due to unburnt gasoline exiting the combustion chamber.
The S85's MSS65 DME uses a unique ignition system known as "Ionic Current Control". During engine development, BMW realized that standard knock sensors were insufficient for observing pre-ignition and misfires on a high-revving ten-cylinder engine. In lieu of standard knock sensors, Ionic Current Control uses each spark plug as a current probe, applying a low voltage to the electrode immediately after the power stroke and sending the resulting current to the Ionic Current Control Unit (ISS) for evaluation. To accomplish this, the S85 used a modified "pencil" style ignition coil, which eliminated the Zener diode in the secondary winding for accurate current measurement. These ignition coils are manufactured to the exact specifications of the OE Ionic Current Control-compatible ignition coil, and will not trigger ignition-related fault codes in the DME.
Bavarian Autosport ignition coils are designed to provide a reliable, long-lasting spark and are an exact fit for your S85-equipped E60 M5, E63 M6, or E64 M6. These high-quality OE replacements are constructed from durable, temperature-resistant plastic and feature high-quality rubber spark plug boots. Each boot is pre-lubricated with high-grade dielectric grease, ensuring easy installation and eliminating potential corrosion.
FEATURES
- Bavarian Autosport Ignition Coils - Set of Ten
- Durable, temperature-resistant plastic construction is designed to withstand extreme heat and harsh conditions, ensuring long-lasting performance.
- High-quality rubber spark plug boots are pre-lubricated with dielectric grease to prevent moisture intrusion and potential corrosion.
- Built to meet or exceed OE manufacturing standards, guaranteeing a perfect fit, reliable performance, and seamless installation.
- NGK 4471 LKR8AP Spark Plugs - Set of Ten
- Multi-ground electrodes improve ignition capability and are less sensitive to increased voltage use with gap growth.
- Corrugated ribs prevent flashover.
- Copper core aids in heat removal.
- Pre-gapped to 0.035" (0.9mm)
- OEM-specified spark plug for all S85 applications.
- 12137841556
- 12137835108
- 20631
- GN10563
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| BMW | E60 | M5 | S85 5.0L | Use vehicle selector to confirm fitment |
| BMW | E63 | M6 | S85 5.0L | Use vehicle selector to confirm fitment |
| BMW | E64 | M6 | S85 5.0L | Use vehicle selector to confirm fitment |
Kit Contents
| Description | Brand | Qty | Lifetime | |
|---|---|---|---|---|
| Spark Plug |
|
10 | YES | |
| Dielectric Spark Plug Boot Protector - 4 Gram Packet |
|
1 | YES | |
| S85 Ignition Coil - Priced Each |
|
10 | YES |
This Product Is Covered By Our Lifetime Replacement Program
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Return Process
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Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
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Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
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Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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