{"product_id":"kacuyelin-ignition-coil-pack-iridium-spark-plug-kit-for-ford-2-0l-2-5l-set-of-4-oem-fit-long-life","title":"KacuYelin Ignition Coil Pack \u0026 Iridium Spark Plug Kit for Ford 2.0L\/2.5L (Set of 4) — OEM-fit, Long-Life","description":"\u003cp\u003e\u003cstrong\u003eThe KacuYelin UF621 kit is a direct-replacement set of four ignition coils and four iridium spark plugs engineered to restore reliable ignition for 2.0L and 2.5L Ford-family 4-cylinder engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete ignition kit is built to match OEM fit and wiring for many Ford, Lincoln, Mercury and Mazda 2.0L\/2.5L naturally aspirated models from 2009–2022. The coils are wound with high-purity copper, encased in heat-resistant epoxy and a silicon-steel core for steady high-voltage output, while the iridium plugs use continuous-laser-welded center electrodes and high-alumina ceramics for long service life and stable spark performance. The set replaces OE references such as UF621, C1658 and GN10507 and is intended as a plug-and-play repair to reduce misfires and improve responsiveness when installed correctly.\u003c\/p\u003e\n\n\u003ch3\u003eHow will swapping to these coils and iridium plugs affect drivability?\u003c\/h3\u003e\n\n\u003cp\u003eReplacing worn coils and plugs can restore consistent ignition timing and combustion quality, which often reduces hesitation, rough idle and hard starting. While results vary by vehicle condition, owners typically notice smoother throttle response and fewer misfire codes after installing fresh ignition parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit replacement for OEM mounting and wiring—no modifications required\u003c\/li\u003e\n  \u003cli\u003eHigh-purity copper windings promote steady voltage delivery to spark plugs\u003c\/li\u003e\n  \u003cli\u003eIridium center electrodes sustain a strong, focused spark for cleaner combustion\u003c\/li\u003e\n  \u003cli\u003eMay reduce engine stumbling and restore normal idle and acceleration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these parts compatible with my vehicle model and year?\u003c\/h3\u003e\n\n\u003cp\u003eThe kit covers many naturally aspirated 2.0L and 2.5L Ford-family models; confirm fitment by matching year, brand, submodel and engine in the vehicle fit tool before ordering. It does not fit turbocharged (Turbo\/T) engines—check your engine code or factory sticker if unsure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Ford Escape (2009–2019 2.5L), Fusion (2010–2020 2.5L; 2013–2020 2.0L), C‑Max (2013–2018 2.0L)\u003c\/li\u003e\n  \u003cli\u003eAlso fits Transit Connect (2014–2022 2.5L), Police Responder and SSV hybrids (2019–2020 2.0L variants)\u003c\/li\u003e\n  \u003cli\u003eCompatible with Mercury Mariner (2009–2011), Milan (2010–2011) and Lincoln MKZ (2011–2012 2.5L; 2013–2020 2.0L)\u003c\/li\u003e\n  \u003cli\u003eMazda Tribute 2009–2010 2.5L covered; confirm by cross-referencing OE numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and manufacturing details matter for longevity?\u003c\/h3\u003e\n\n\u003cp\u003eKacuYelin coils use German-imported copper winding and a silicon-steel core with high-temperature epoxy to resist heat and oxidation. The iridium plugs employ a continuous 360° laser-welded electrode and 95% high‑alumina ceramic insulator, designed for higher wear resistance and improved insulation compared with conventional plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCoil construction: high-purity copper windings + silicon steel core + heat-resistant epoxy\u003c\/li\u003e\n  \u003cli\u003ePlug construction: iridium-tipped electrode with continuous laser welding for stronger sparks\u003c\/li\u003e\n  \u003cli\u003eHigh‑alumina ceramic insulator improves thermal stability and electrical isolation\u003c\/li\u003e\n  \u003cli\u003eManufactured in TS16949-certified facilities with OEM-equivalent dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and maintain this ignition kit?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is intended to be bolt‑in: remove old coils and plugs, inspect wells and connectors, torque new plugs to spec, and install coils snugly. Regular inspection of ignition boots and wiring and following manufacturer torque and gap recommendations will extend service life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse correct spark plug gap and torque values for your engine—consult service manual\u003c\/li\u003e\n  \u003cli\u003eInspect ignition boots and electrical connectors for corrosion before installation\u003c\/li\u003e\n  \u003cli\u003eReplace coils and plugs as a matched set when encountering misfires or rough running\u003c\/li\u003e\n  \u003cli\u003eNote: do not use on turbocharged engines; verify engine aspiration first\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The KacuYelin UF621 coil and iridium spark plug kit is intended for DIY mechanics and professional technicians repairing naturally aspirated 2.0L and 2.5L Ford-family vehicles that need a reliable, OEM-dimension replacement. It’s suited to owners experiencing misfires, poor idle, hard starts or diminished responsiveness who want a long-service iridium plug option combined with high-quality coils from a TS16949-certified manufacturer.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit fit a turbocharged engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This KacuYelin UF621 kit is for naturally aspirated 2.0L and 2.5L engines only and does not fit turbocharged models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do the plugs and coils come pre-gapped and ready?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Plugs are manufactured to spec but you should verify and adjust the gap and torque to your vehicle’s service manual before installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KacuYelin","offers":[{"title":"Default Title","offer_id":55171222536535,"sku":"B0F1FRJRRR","price":67.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/kacuyelin-uf621-coil-pack-front-view.jpg?v=1790440753","url":"https:\/\/britishgarage.co.uk\/products\/kacuyelin-ignition-coil-pack-iridium-spark-plug-kit-for-ford-2-0l-2-5l-set-of-4-oem-fit-long-life","provider":"British Garage","version":"1.0","type":"link"}