Ignition Coil & Iridium Spark Plugs for Infiniti M37 (2011-2013) 3.7L V6

High-Performance Ignition Coil & Iridium Spark Plugs for 2011-2013 Infiniti M37

Who is it for: Direct replacement ignition set designed to cure high-RPM misfires and restore factory combustion efficiency in the VQ37VHR.

The Stock M37 Ignition Weakness

The factory ignition coils on the 3.7L VQ37VHR engine are repeatedly subjected to severe thermal cycling and voltage degradation. Over time, the epoxy potting compound breaks down, leading to micro-cracking and internal secondary winding shorts. This heat soak results in weak spark delivery, manifesting as rough idling, hesitation under heavy throttle, and P0300-series misfire codes. Furthermore, standard platinum or aging spark plugs suffer from accelerated electrode erosion under the high-compression (11.0:1) environment of the VQ engine, increasing the gap and demanding higher firing voltage, which exponentially strains the already weakened OEM coils.

The Engineering Solution

This comprehensive ignition overhaul addresses thermal breakdown by utilizing upgraded coil housings formulated from high-dielectric polymer resins to resist heat soak and prevent voltage leakage. The primary and secondary copper windings are precision-wound to ensure a consistent, high-energy spark output through the entire RPM band. Paired with high-performance Iridium spark plugs, pre-gapped to precisely 0.8mm-0.9mm, this kit guarantees superior arc stability. Iridium’s ultra-high melting point (over 4,000°F) vastly outperforms traditional nickel and platinum variants, ensuring minimal electrode wear, highly efficient fuel atomization, and resistance to carbon fouling, thereby restoring optimal torque delivery and fuel economy.

Technical Specifications

Compatibility

• 2011 Infiniti M37 3.7L V6
• 2012 Infiniti M37 3.7L V6
• 2013 Infiniti M37 3.7L V6

The Infiniti Caliber

Engineered for the demanding dynamics of Japanese luxury sedans, this ignition set ensures smooth, linear power delivery and eliminates frustrating CELs, keeping your VQ37VHR running flawlessly.