{"product_id":"ignition-coil-and-iridium-spark-plugs-for-volvo-s40-2000-2004-1-9l","title":"Ignition Coil and Iridium Spark Plugs for Volvo S40 (2000-2004) 1.9L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Kit for 2000-2004 Volvo S40\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and iridium spark plug kit restores secondary voltage stability and primary spark energy across the cylinder bank on 2000-2004 Volvo S40 models to resolve misfire codes and restore factory combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Volvo S40 Dielectric Breakdown and Thermal Fatigue\u003c\/h3\u003e\n\u003cp\u003eThe factory ignition setup on the \u003cstrong\u003eX40\u003c\/strong\u003e chassis paired with the \u003cstrong\u003eB4204T\u003c\/strong\u003e 1.9L turbocharged inline-four is vulnerable to extreme heat cycling. Confined beneath the engine dress cover, OEM pencil coils endure severe thermal stress that degrades the internal winding epoxy and hardens silicone boots. Over time, micro-cracks form, allowing high-voltage secondary arc-over to ground against the cylinder head under boost. Combined with standard worn spark plugs suffering from electrode erosion and widened gaps, the system triggers chronic P0300-P0304 misfire DTCs, erratic idle, and unburned fuel dumping into the catalytic converter.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit replaces worn components with four high-dielectric pencil ignition coils and four fine-wire iridium spark plugs. The coils feature reinforced secondary winding insulation and heat-resistant silicone boots to completely prevent secondary flashover under high cylinder pressures. The included fine-wire iridium spark plugs offer superior thermal stability, lowering required ignition voltage while resisting spark erosion far longer than standard copper or platinum cores. Directly cross-referenced with OEM numbers \u003cstrong\u003eUF365\u003c\/strong\u003e and \u003cstrong\u003e3340065J00\u003c\/strong\u003e, this package drops straight into the factory valve cover recess with complete plug-and-play wiring harness integration.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2000-2004 Volvo S40\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eB4204T\u003c\/strong\u003e 1.9L Turbo \/ \u003cstrong\u003eX40\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e160 hp \/ 177 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eUF365\u003c\/strong\u003e, \u003cstrong\u003e3340065J00\u003c\/strong\u003e, KIN119956TOP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2000 Volvo S40 Base 1.9L L4 Turbo (Engine: \u003cstrong\u003eB4204T\u003c\/strong\u003e, Chassis: \u003cstrong\u003eX40\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003e2001 Volvo S40 Base 1.9L L4 Turbo (Engine: \u003cstrong\u003eB4204T\u003c\/strong\u003e, Chassis: \u003cstrong\u003eX40\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003e2002 Volvo S40 Base 1.9L L4 Turbo (Engine: \u003cstrong\u003eB4204T\u003c\/strong\u003e, Chassis: \u003cstrong\u003eX40\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003e2003 Volvo S40 Base \/ LSE 1.9L L4 Turbo (Engine: \u003cstrong\u003eB4204T\u003c\/strong\u003e, Chassis: \u003cstrong\u003eX40\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003e2004 Volvo S40 Base \/ LSE 1.9L L4 Turbo (Engine: \u003cstrong\u003eB4204T\u003c\/strong\u003e, Chassis: \u003cstrong\u003eX40\u003c\/strong\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the X40 S40?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2000-2004 Volvo S40 equipped with the \u003cstrong\u003eB4204T\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the iridium spark plugs pre-gapped for the factory turbo application?\u003c\/strong\u003e\u003cbr\u003e Yes, they are factory pre-gapped, though verifying the 0.028\"-0.030\" gap prior to installation is recommended for optimal boosted performance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Volvo Standard\u003c\/h3\u003e\n\u003cp\u003eMaintain proper European powertrain calibration and protect sensitive catalytic emissions systems with high-grade ignition hardware designed to eliminate hesitation and guarantee zero CEL codes under full engine load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593962590456,"sku":"DS-EUP0E05TI","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-and-iridium-spark-plugs-for-volvo-s40-2000-2004-1-9l-1.jpg?v=1790054700","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-volvo-s40-2000-2004-1-9l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}