Ignition Coil & Spark Plugs for BMW 550i 550i xDrive (2011-2013) 4.4L V8
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Direct-Replacement Ignition Coil & Spark Plugs for 2011-2013 BMW 5 Series
Restoring optimal combustion and eliminating misfires: This comprehensive ignition service kit replaces degraded factory coils and fouled plugs to restore factory power delivery and smooth idling.
The Stock F10 Ignition Shortcomings
The N63 4.4L twin-turbo V8 engine is notoriously harsh on its ignition components due to extreme thermal loads generated by the 'hot-V' turbocharger layout. Intense under-hood heat bakes the factory ignition coil housings, causing micro-cracks in the epoxy potting. This degradation allows high voltage to arc directly to the cylinder head rather than bridging the spark plug gap, resulting in heavy-load hesitation, rough idling, and misfire codes. Additionally, standard spark plugs suffer electrode erosion under these high cylinder pressures, widening the gap and heavily straining the aging factory coils.
The Engineering Solution
This kit revitalizes the N63 ignition sequence, combining eight high-output coils with matched platinum spark plugs. The upgraded coils feature thermal-resistant silicone boots and high-dielectric epoxy resin to combat severe heat soak. Inside, tightly wound copper windings maximize voltage transfer to prevent spark blowout under high boost. The included platinum spark plugs utilize a durable fine-wire center electrode that resists high-temperature erosion. This promotes a highly concentrated spark kernel for efficient fuel combustion, restoring crisp throttle response, ensuring a perfectly stable idle, and delivering consistent ignition performance.
Technical Specifications
| Fitment | 2011-2013 BMW 5 Series |
| Engine / Chassis | N63 4.4L V8 / F10 |
| Stock Output | 400 hp / 450 lb-ft (Approx) |
| Part Number | 12137523345, UF667, 2IGC0102, 921-2111, C1638VC |
Compatibility
- 2011 BMW 550i 4.4L V8
- 2012 BMW 550i 4.4L V8
- 2013 BMW 550i 4.4L V8
- 2011 BMW 550i xDrive 4.4L V8
- 2012 BMW 550i xDrive 4.4L V8
- 2013 BMW 550i xDrive 4.4L V8
The BMW Precision Standard
Engineered for precise module communication, these components ensure a perfect interface with the DME, delivering a stable spark profile and keeping your instrument cluster entirely free of Check Engine Lights.
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