<h2>Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2006-2008 BMW 7 Series</h2> <p><strong>Primary Function:</strong> Restores factory secondary ignition output and precise combustion timing by replacing degraded coil-on-plug boots and eroded spark plugs across all eight cylinders.</p> <h3>The Stock 7 Series Thermal Degradation Problem</h3> <p>The high thermal load of the 4.8L V8 engine bay accelerates dielectric breakdown within the factory epoxy resin and copper windings of the original ignition coils. Over time, heat cycles cause micro-cracking in the coil insulation and spark plug ceramic insulators, leading to voltage leakage, intermittent misfires under heavy load, rough idle, and increased hydrocarbon emissions that foul catalytic converters.</p> <h3>The Engineering Solution</h3> <p>This comprehensive service kit pairs eight high-dielectric coil assemblies with fine-wire iridium spark plugs. The ignition coils feature reinforced primary and secondary internal copper windings, heat-resistant silicone boots, and factory-matched blade terminals for stable voltage transfer. The accompanying iridium spark plugs resist electrical erosion, lowering the required ignition voltage while maintaining a consistent spark kernel under extreme combustion chamber pressures.</p> <h3>Technical Specifications</h3> <table width="100%" style="border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;"> <tr style="background-color: #f9f9f9;"> <td style="padding:8px;"><strong>Fitment</strong></td> <td style="padding:8px;">2006-2008 BMW 7 Series</td> </tr> <tr> <td style="padding:8px;"><strong>Engine / Chassis</strong></td> <td style="padding:8px;">N62B48 (4.8L V8) / E65, E66</td> </tr> <tr style="background-color: #f9f9f9;"> <td style="padding:8px;"><strong>Stock Output</strong></td> <td style="padding:8px;">360 hp / 360 lb-ft (Approx)</td> </tr> <tr> <td style="padding:8px;"><strong>Part Number / Interchange</strong></td> <td style="padding:8px;">UF515, UF-515, UF522, UF-522</td> </tr> </table> <h3>Compatibility</h3> <ul> <li>2006 BMW 750i / 750Li 4.8L V8 (E65 / E66)</li> <li>2007 BMW 750i / 750Li 4.8L V8 (E65 / E66)</li> <li>2008 BMW 750i / 750Li 4.8L V8 (E65 / E66)</li> </ul> <h3>The BMW Precision Standard</h3> <p>Engineered to meet stringent European OBD-II parameters, this ignition kit eliminates misfire-related fault codes (DME adaptation errors) without causing radio frequency interference (RFI) or electrical noise across the vehicle's sensitive CAN-bus network.</p>