<h2>Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2006-2007 Mazda 5</h2> <p><strong>What it Does:</strong> The Direct-Fit Ignition Coil and Iridium Spark Plug Kit restores factory combustion efficiency and stabilizes idle on the 2006-2007 Mazda 5 by delivering consistent high-voltage discharge directly to the combustion chambers.</p> <h3>The Stock Mazda 5 Ignition Breakdown</h3> <p>On the <strong>CR</strong> chassis Mazda 5, factory coil-on-plug modules frequently suffer from dielectric breakdown due to intense thermal cycling inside the compact engine bay. The naturally aspirated <strong>MZR 2.3L (L3-VE)</strong> engine subjects factory ignition assemblies to high cylinder head temperatures, degrading the silicone boots and breaking down internal epoxy insulation. Over time, micro-cracks cause secondary winding resistance drift, resulting in spark blowout, rough cold starts, and random misfire codes (DTC P0300–P0304). Worn standard plugs further strain tired coil packs, accelerating unburned fuel wash across downstream catalysts.</p> <h3>The Engineering Solution</h3> <p>This comprehensive ignition service kit resolves secondary ignition collapse by matching heavy-duty pencil coils with high-conductivity fine-wire iridium spark plugs. The replacement coils feature reinforced thermoplastic housings, vacuum-potted high-dielectric epoxy, and low-resistance copper windings that maintain steady dwell times under load without thermal degradation. Paired with laser-welded iridium center electrodes that minimize electrical quench and resist electrode erosion, this kit ensures rapid flame kernel propagation, razor-sharp throttle response, and reduced fuel consumption across the factory operating band.</p> <h3>Technical Specifications</h3> <table width="100%" style="border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;"> <tr style="background-color: #f9f9f9;"> <th style="padding:10px; text-align: left; border: 1px solid #e0e0e0;">Fitment</th> <td style="padding:10px; border: 1px solid #e0e0e0;">2006-2007 Mazda 5</td> </tr> <tr> <th style="padding:10px; text-align: left; border: 1px solid #e0e0e0;">Engine / Chassis</th> <td style="padding:10px; border: 1px solid #e0e0e0;"> <strong>MZR 2.3L (L3-VE)</strong> / <strong>CR</strong> </td> </tr> <tr style="background-color: #f9f9f9;"> <th style="padding:10px; text-align: left; border: 1px solid #e0e0e0;">Stock Output</th> <td style="padding:10px; border: 1px solid #e0e0e0;">157 hp / 148 lb-ft</td> </tr> <tr> <th style="padding:10px; text-align: left; border: 1px solid #e0e0e0;">Replaces OEM Part #</th> <td style="padding:10px; border: 1px solid #e0e0e0;"> <strong>LFB618100C9U</strong>, <strong>UF541</strong>, 5C1741, <strong>LFB618100C</strong>, C779, COP271, GN10400, 1788395, U5204, 48736</td> </tr> </table> <h3>Compatibility</h3> <ul> <li>2006 Mazda 5 Sport (2.3L L4 Gas)</li> <li>2006 Mazda 5 Touring (2.3L L4 Gas)</li> <li>2006 Mazda 5 Grand Touring (2.3L L4 Gas)</li> <li>2007 Mazda 5 Sport (2.3L L4 Gas)</li> <li>2007 Mazda 5 Touring (2.3L L4 Gas)</li> <li>2007 Mazda 5 Grand Touring (2.3L L4 Gas)</li> </ul> <h3>Frequently Asked Questions</h3> <p><strong>Does this fit the CR 5?</strong><br> Yes, this is a direct fit for the 2006-2007 Mazda 5 equipped with the <strong>MZR 2.3L (L3-VE)</strong> engine.</p> <p><strong>Are the iridium plugs pre-gapped for this application?</strong><br> Yes, the spark plugs come pre-gapped to factory specification, though checking clearance with a non-contact wire gauge prior to torquing is recommended.</p> <h3>The Mazda Performance Caliber</h3> <p>Mazda naturally aspirated platforms demand consistent spark delivery to maintain optimal thermal efficiency and linear power. This direct-replacement kit eliminates ignition lag, delivering exact spark timing and reliable combustion for your daily commute or highway cruising.</p>