KacuYelin Ignition Coil Pack and Iridium Spark Plug Set of 4 — 2009–2022 2.0L/2.5L Direct-Fit, OEM-Equivalent

This kit pairs high-quality ignition coils with long-life iridium plugs to replace worn components on compatible 2.0L and 2.5L inline-four engines. Each coil uses corrosion-resistant materials and copper windings for steady high-voltage delivery, while the iridium plugs employ precision welding and durable ceramics for concentrated sparks and extended service life. The set is manufactured in TS16949-aligned facilities and designed for direct-fit installation where listed.

Which vehicles and engines does this KacuYelin set fit?

This kit is built for a range of naturally aspirated Ford, Lincoln, Mercury and Mazda models with 2.0L or 2.5L L4 engines produced between 2009 and 2022. It covers many popular sedans, crossovers and compact SUVs when they use the listed engine codes and non-turbo configurations.

• Ford: Escape (2009–2019, 2.5L), Fusion (2010–2020, 2.5L; 2013–2020, 2.0L), C-Max (2013–2018, 2.0L), Transit Connect (2014–2022, 2.5L), Police Responder/SSV Plug-In Hybrid variants (specific years/models noted)
• Mercury: Mariner (2009–2011, 2.5L), Milan (2010–2011, 2.5L)
• Lincoln: MKZ (2011–2012, 2.5L; 2013–2020, 2.0L)
• Mazda: Tribute (2009–2010, 2.5L)

How do the ignition coils improve engine performance?

KacuYelin ignition coils use high-purity copper windings, silicon steel cores and high-temperature epoxy to maintain consistent voltage output under load. That stability helps reduce misfires and supports smoother running, particularly on older engines that suffer from weakened coils.

• German-imported copper windings and corrosion-resistant materials for reliable power delivery
• High-temperature epoxy molding resists cracking and insulation breakdown
• OE-equivalent fit numbers (e.g., UF621, C1658, GN10507) for direct replacement

What advantages do the iridium spark plugs offer?

The included iridium plugs use a 360° laser-welded center electrode and high-alumina ceramic for a focused spark and strong electrical insulation. Their construction reduces electrode wear and helps keep combustion stable, which can improve throttle response and fuel metering over time.

• 360° continuous laser welding for concentrated, consistent spark formation
• High nickel content and iridium tip for extended life—expected lifespan far beyond conventional plugs
• 95% alumina ceramic insulator for high-temperature tolerance and good insulation

Is installation straightforward and what should I check before buying?

Yes—this set is made for plug-and-play replacement when it matches your car’s year, engine size and naturally aspirated configuration. Confirm your vehicle’s model year, engine displacement and that it’s not turbocharged before ordering to avoid compatibility issues.

• Direct-fit design to match OEM mounting and electrical connections
• Not compatible with turbocharged (Turbo/T) engines—verify engine type first
• Double-check year, brand, submodel and engine size in fitment tools before purchase

Who this is for: Drivers and indie mechanics seeking a full ignition refresh for mid-2000s to early-2020s Ford-family and related vehicles with 2.0L/2.5L naturally aspirated four-cylinder engines. Choose this kit if you want a matched pair of coils and long-life iridium plugs that align with OEM specs for smoother starts, fewer misfires and predictable service intervals.