Ignition Coil & Iridium Spark Plugs for Infiniti G37 (2008-2013) 3.7L V6

High-Energy Ignition Coil & Iridium Spark Plug Kit for 2008-2013 Infiniti G37

Direct replacement ignition coil and iridium spark plug kit designed to restore misfire-free performance and optimal combustion efficiency. This twelve-piece kit directly replaces the aging factory ignition system, ensuring consistent spark delivery under high-load conditions.

The Stock G37 Thermal Degradation Problem

The factory ignition coils on the VQ37VHR engine are highly susceptible to thermal degradation over time. Positioned directly above the exhaust manifolds within a tightly packaged engine bay, the OEM epoxy potting compound breaks down after thousands of heat cycles. This thermal stress leads to internal primary and secondary winding shorts, resulting in weak spark output and intermittent high-RPM misfires, and deteriorating fuel economy. Furthermore, factory standard spark plugs suffer from accelerated electrode erosion under the VQ engine's high compression and aggressive Variable Valve Event and Lift (VVEL) mapping, leading to widened spark gaps and incomplete combustion.

The Engineering Solution

This comprehensive twelve-piece ignition kit addresses these thermal and electrical shortcomings. The upgraded ignition coils are constructed with high-dielectric epoxy and reinforced thermoplastic housings to resist severe heat soak and prevent voltage leaks, ensuring maximum energy transfer to the spark plug. Paired with these coils are high-performance iridium spark plugs, pre-gapped precisely between 0.8mm and 0.9mm. Iridium is significantly harder and more heat-resistant than standard nickel or platinum, allowing for a concentrated, ultra-fine center electrode. This design dramatically lowers the voltage requirement for spark creation, effectively eliminating spark blowout at high RPMs, stabilizing the idle, and restoring the crisp throttle response required by the 3.7L V6.

Technical Specifications

Compatibility

• 2008-2013 Infiniti G37 Base 3.7L V6
• 2008-2013 Infiniti G37 Journey 3.7L V6
• 2008-2013 Infiniti G37 Sport 3.7L V6
• 2009-2013 Infiniti G37 X 3.7L V6
• 2011-2013 Infiniti G37 IPL 3.7L V6

The Infiniti Caliber

Engineered for the rigorous demands of high-revving Japanese performance engines, this ignition package is designed to ensure reliable power delivery, smooth acceleration, and consistent throttle response without triggering check engine lights.

Common Questions

Will this ignition coil and spark plug kit fit my 2008-2013 Infiniti G37?
Yes, this twelve-piece kit is a direct replacement for all 2008-2013 Infiniti G37 models equipped with the 3.7L VQ37VHR V6 engine, including Base, Journey, Sport, X, and IPL trims.

What is included in the box?
The package includes 6 upgraded ignition coils and 6 iridium spark plugs, giving you a complete twelve-piece set for all 6 cylinders on your 3.7L V6.

Do the spark plugs come pre-gapped?
Yes, the included iridium spark plugs come pre-gapped between 0.8mm and 0.9mm for the VQ37VHR engine.

Which factory part numbers do these ignition coils replace?
These coils directly replace OEM part number 22448EY00A (22448-EY00A) as well as aftermarket cross-reference numbers UF-617 and UF617.

Will this kit fit an all-wheel-drive G37 X or IPL trim?
Yes, this kit is engineered specifically for the 2008-2013 Infiniti G37 with the 3.7L VQ37VHR V6 engine, including the 2009-2013 G37 X and 2011-2013 IPL models.