Ignition Coil & Iridium Spark Plugs for Infiniti M35 (2009-2010) 3.5L

High-Performance Ignition Coil & Iridium Spark Plugs for 2009-2010 Infiniti M35 (VQ35HR / Y50)

Optimized Combustion Restoration: Replaces degraded factory ignition components to eliminate misfires, restore lost throttle response, and ensure stable voltage delivery throughout the RPM range.

The Stock M35 Ignition Degradation

The factory ignition system on the VQ35HR engine is subjected to immense thermal stress due to its high-revving nature and tightly packaged engine bay. Over multiple heat cycles, the epoxy potting compound inside the OEM ignition coils begins to micro-crack, leading to internal arcing and voltage leaks. Simultaneously, standard or worn spark plugs suffer from electrode erosion, causing the spark gap to widen beyond factory tolerances. This combination forces the coils to work harder to jump the gap, significantly reducing secondary voltage output. For the Y50 chassis, this manifests as rough idling, hesitations under heavy load, diminished fuel economy, and eventual cylinder misfire codes (P0300 series) that disrupt the ECU’s air-fuel mapping.

The Engineering Solution

This ignition coil and iridium spark plug package is engineered to surpass OEM specifications and stabilize the VQ35HR's combustion cycle. The ignition coils utilize upgraded primary and secondary copper windings with high-grade magnetic steel cores, maximizing spark energy and ensuring rapid charge times even at high RPMs. The housing features advanced thermal-resistant polymers and heavy-duty silicone boots that reject engine heat and prevent voltage leakage. Paired with laser-welded iridium center electrode spark plugs, this kit guarantees a consistent, hyper-focused spark. The ultra-fine iridium tip requires less voltage to bridge the gap, which drastically extends the lifespan of the coils while delivering complete air-fuel burns. This results in restored factory horsepower, smoother power delivery, and reliable cold starts in all conditions.

Technical Specifications

Compatibility

• 2009 Infiniti M35 Base 3.5L V6
• 2009 Infiniti M35 X 3.5L V6
• 2010 Infiniti M35 Base 3.5L V6
• 2010 Infiniti M35 X 3.5L V6

The Infiniti Precision Caliber

Engineered to match the high-revving precision of JDM V6 powerplants, this ignition service kit ensures your VQ35HR delivers the smooth, uncompromised power and reliability expected from a premier luxury sport sedan.