Ignition Coil & Iridium Spark Plugs for Infiniti Q50 Q60 (2014-2015) 3.7L V6

High-Energy Ignition Coil & Iridium Spark Plug Kit for 2014-2015 Infiniti Q50 & Q60

Restores proper combustion and eliminates misfires by replacing degraded factory ignition components with high-output coils and iridium-tipped spark plugs.

The Stock Q50 & Q60 Ignition Weakness

The factory VQ37VHR ignition system is notoriously susceptible to thermal degradation. Over standard mileage intervals, the constant heat cycling within the V37 chassis engine bay breaks down the internal epoxy and secondary windings of the OEM ignition coils. This results in voltage leaks, weak spark delivery, and increased resistance. Simultaneously, standard factory spark plug electrodes erode, widening the gap beyond specification. These compounding issues manifest as rough idling, hesitation under heavy throttle, reduced fuel economy, and eventual cylinder misfire codes (P0300 series) that disrupt the engine's precise Variable Valve Event and Lift (VVEL) timing requirements.

The Engineering Solution

This replacement kit provides a comprehensive overhaul for the 3.7L ignition system, upgrading the hardware to restore and exceed factory combustion efficiency. The new ignition coils feature optimized primary and secondary copper windings sealed in high-dielectric epoxy, ensuring maximum voltage output to the plug while resisting high-RPM heat soak. Paired with these coils are high-performance iridium spark plugs. Iridium offers a significantly higher melting point than traditional nickel or platinum, allowing for a finer wire center electrode. This concentrates the electrical field for a more consistent, hotter spark. The plugs come pre-gapped to the factory 1.1mm (0.043 in) specification, ensuring optimal arc propagation that supports the high-compression demands of the VQ37VHR engine, delivering smooth idle and linear power delivery.

Technical Specifications

Compatibility

• 2014 Infiniti Q50 3.7L V6
• 2015 Infiniti Q50 3.7L V6
• 2014 Infiniti Q60 3.7L V6
• 2015 Infiniti Q60 3.7L V6

The Infiniti Precision Standard

Maintaining the VQ37VHR's ignition system is critical to preserving its renowned high-RPM power band and sharp throttle response, ensuring reliable, smooth power delivery on the street or the track.

Common Questions

Will this ignition coil and spark plug kit fit my 2014 or 2015 Infiniti Q50 or Q60?
Yes. This kit is a direct fit for the 2014-2015 Infiniti Q50 (V37) and 2014-2015 Infiniti Q60 (CV36/HV36) equipped with the 3.7L V6 (VQ37VHR) engine.

Will this kit fit an Infiniti Q50 or Q60 with a twin-turbo V6 or hybrid engine?
This kit is made specifically for the naturally aspirated 3.7L V6 (VQ37VHR) engine found in 2014-2015 models and replaces part numbers 22448EY00A and UF-617.

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

Do the iridium spark plugs come pre-gapped?
Yes, the iridium-tipped spark plugs arrive pre-gapped from the manufacturer for direct installation into your 3.7L V6 engine.

What symptoms indicate that my 3.7L V6 needs new coils and spark plugs?
Common signs of degraded coils and worn plug electrodes on the VQ37VHR include rough idling, hesitation under heavy throttle, and P0300-series cylinder misfire codes caused by heat soak and voltage leaks.