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Ignition Coil & Iridium Spark Plugs for Mazda 6 (2006-2013) 2.3L 2.5L



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High-Energy Ignition Coil & Iridium Spark Plugs for 2006-2013 Mazda 6

Designed to restore optimal combustion efficiency and eliminate misfires, this direct-replacement ignition coil and iridium spark plug kit revitalizes the MZR engine platform.

The Stock 6 Ignition Weakness

Over time, the factory ignition coils on the MZR 2.3L and 2.5L engines suffer from thermal degradation due to constant heat cycling near the exhaust and cylinder head. The OEM epoxy frequently cracks, allowing moisture intrusion and voltage leaks. This directly results in erratic idling, hesitation under heavy load, and stubborn P0300-series misfire codes. Furthermore, standard factory copper or platinum plugs experience rapid gap erosion, causing poor fuel atomization, reduced throttle response, and a noticeable drop in fuel economy as the engine logs higher mileage.

The Engineering Solution

This comprehensive ignition overhaul addresses these specific failure points by utilizing upgraded internal copper windings and superior dielectric epoxy to resist heat soak and voltage breakdown. By maintaining a more stable primary and secondary resistance, these coils ensure a consistent, high-voltage spark output. Paired with the included Iridium spark plugs, which feature an ultra-fine wire center electrode, this kit lowers the required voltage for sparking while delivering up to a 15% increase in ignition energy. This translates to a stronger flame kernel, smoother acceleration, stabilized idle, and restored OEM+ reliability without triggering any check engine lights.

Technical Specifications

Fitment 2006-2013 Mazda 6
Engine / Chassis 2.3L MZR L3-VE, 2.5L MZR L5-VE / GG, GH
Stock Output 156-170 hp / 150-167 lb-ft (Approx)
Part Number UF540, 5C1740, 178-8350, L3G2-18-100-B, L3K9-18-100-A

Compatibility

  • 2006-2008 Mazda 6 (2.3L 4-Cylinder)
  • 2009-2013 Mazda 6 (2.5L 4-Cylinder)

The Mazda JDM Caliber

Engineered for the daily driven Mazda, this complete ignition pack delivers the reliable, responsive power required for smooth highway merging and spirited driving, ensuring your MZR engine runs at peak efficiency with zero CELs.


Engine Safety Rating
Difficulty 


Fitment

Make

Mazda

Engine Size

  • 2.3L
  • 2.5L

Year

  • 2006
  • 2007
  • 2008
  • 2009
  • 2010
  • 2011
  • 2012
  • 2013

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

Ignition Coil & Iridium Spark Plugs for Mazda 6 (2006-2013) 2.3L 2.5L

$99.95