Ignition Coil & Iridium Spark Plugs for Nissan Altima (2007-2018) 3.5L

High-Output Ignition Coil & Iridium Spark Plugs for 2007-2018 Nissan Altima (VQ35DE / L32/L33)

Restores lost power and eliminates misfires: This ignition coil and iridium spark plug kit replaces degraded OEM components to ensure consistent, high-voltage spark delivery across the entire RPM range.

The Stock VQ35DE Ignition Weakness

The transverse-mounted 3.5L VQ35DE in the L32 and L33 Altima chassis suffers from severe heat soak, particularly on the rear bank (Bank 1) closest to the firewall. Over thousands of heat cycles, the factory ignition coil epoxy begins to degrade, causing micro-cracking and internal resistance spikes. This thermal degradation forces the coils to work harder, eventually leading to dielectric breakdown. Simultaneously, the factory spark plugs experience electrode erosion, widening the spark gap. A wider gap demands higher secondary voltage to ionize the air-fuel mixture, accelerating coil failure. This compounding ignition strain manifests as rough idling, hesitation under load, poor fuel economy, and eventual P030X cylinder misfire codes.

The Engineering Solution

This direct-replacement ignition coil and iridium spark plug package is engineered to resolve VQ35DE spark blowout and thermal degradation. The upgraded ignition coils are manufactured using high-temperature-resistant epoxy and premium copper core windings, ensuring maximum voltage transfer and superior resistance to firewall heat soak. This robust internal construction stabilizes dwell times and delivers a consistent, high-energy spark across the entire RPM band. Paired with these coils are fine-wire iridium spark plugs. The ultra-dense iridium center electrode requires significantly less firing voltage than standard plugs, immediately reducing the electrical load on the coils. Furthermore, the high melting point of iridium prevents gap erosion, maintaining exact factory firing specifications for an extended service life. The plug threads feature trivalent metal plating, eliminating the need for anti-seize and protecting the aluminum cylinder head threads from galling during installation.

Technical Specifications

Compatibility

• 2007-2009 Nissan Altima SE 3.5L V6
• 2007-2012 Nissan Altima SL 3.5L V6
• 2010-2012 Nissan Altima SR 3.5L V6
• 2013-2018 Nissan Altima SL 3.5L V6

The Nissan Standard

Engineered for the high-revving demands of the VQ platform, this kit restores responsive power delivery, smooths out rough idles, and ensures long-term ignition reliability without triggering a Check Engine Light (CEL).