Ignition Coil and Iridium Spark Plugs for Mazda 626 (1998-2002) 2.5L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 1998-2002 Mazda 626

Complete Ignition Refresh: Replaces degraded factory secondary ignition components to eliminate misfires, restore smooth idle dynamics, and ensure consistent combustion across all cylinders under load.

The Stock 626 Ignition System Breakdown

The 2.5L KL-DE V6 engine bay generates substantial thermal cycling that degrades the factory ignition coil boots and internal primary/secondary winding insulation over time. As the factory epoxy resin and copper windings undergo continuous heat soak, internal resistance increases, causing weak spark delivery, intermittent cylinder misfires, and unburnt hydrocarbons fouling the exhaust stream. Coupled with worn traditional copper or platinum plugs with eroded gap clearances, the ignition system struggles to maintain spark kernel propagation, leading to hesitation and rough idle.

The Engineering Solution

This direct-replacement ignition kit pairs six heavy-duty coil-on-plug assemblies with six precision iridium spark plugs. The coils feature high-conductivity internal copper windings and durable dielectric epoxy housings engineered to resist thermal degradation and prevent high-voltage arcing. The fine-wire iridium spark plugs provide superior ignitability, lower required firing voltage, and ultra-high melting point resistance for clean, continuous spark stability across the entire RPM band.

Technical Specifications

Compatibility

• 1998 Mazda 626 LX, ES (2.5L V6 KL-DE)
• 1999 Mazda 626 LX, ES (2.5L V6 KL-DE)
• 2000 Mazda 626 LX, ES (2.5L V6 KL-DE)
• 2001 Mazda 626 LX, ES (2.5L V6 KL-DE)
• 2002 Mazda 626 LX, ES (2.5L V6 KL-DE)

The Mazda Performance Standard

Engineered to meet exact Japanese OEM specifications, this ignition system kit ensures factory-calibrated electrical impedance, quick throttle response, and smooth power delivery without triggering engine fault codes or hesitation.