{"product_id":"ignition-coil-and-iridium-spark-plugs-for-volvo-v90-1997-1998-2-9l","title":"Ignition Coil and Iridium Spark Plugs for Volvo V90 (1997-1998) 2.9L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Kit for 1997-1998 Volvo V90\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Ignition Coil and Iridium Spark Plug Kit restores clean, high-output spark across all six cylinders on the 1997-1998 Volvo V90 to resolve misfires, smooth idle oscillation, and restore lost combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Volvo V90 Thermal Breakdown and Secondary Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe naturally aspirated \u003cstrong\u003eB6304S\u003c\/strong\u003e inline-six engine features deep cylinder-head spark plug wells encased beneath a sealed aluminum top cover. Over sustained drive cycles, ambient cylinder-head heat soaking degrades the factory epoxy resin and copper windings inside the OEM pencil coils. This chronic thermal stress causes micro-fissuring of the silicone insulator boots and internal primary-to-secondary dielectric puncture, leading to low-RPM hesitation, erratic idle, and cylinder misfire codes under load. Concurrently, factory nickel or copper plugs suffer rapid electrode erosion, increasing the required firing voltage beyond what aging stock coils can reliably discharge.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition service kit restores factory dwell performance using heavy-duty direct-fit coil-on-plug units coupled with ultra-fine wire iridium spark plugs. Each ignition coil features high-dielectric PPS thermoplastic housings, vacuum-potted epoxy insulation, and premium copper windings capable of maintaining consistent kilovolt output under severe thermal loads. Paired with laser-welded iridium-tipped fine-wire electrodes, the kit lowers required firing voltages, suppresses carbon fouling, and guarantees rapid flame-kernel propagation for crisp throttle response and stable air-fuel burn across the entire RPM band.\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;\"\u003e1997-1998 Volvo V90\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\u003eB6304S 2.9L I6\u003c\/strong\u003e \/ \u003cstrong\u003e965 Platform\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;\"\u003e181 hp \/ 199 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\u003e35313006\u003c\/strong\u003e, \u003cstrong\u003eUF167\u003c\/strong\u003e, \u003cstrong\u003e9135689\u003c\/strong\u003e, \u003cstrong\u003e91356899\u003c\/strong\u003e, \u003cstrong\u003e9146776\u003c\/strong\u003e, \u003cstrong\u003e1275971\u003c\/strong\u003e, \u003cstrong\u003e12759710\u003c\/strong\u003e, \u003cstrong\u003e12759718\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1997 Volvo V90 Base Wagon 2.9L L6 (B6304S \/ 965 Chassis)\u003c\/li\u003e\n  \u003cli\u003e1998 Volvo V90 Base Wagon 2.9L L6 (B6304S \/ 965 Chassis)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the 965 Platform V90?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1997-1998 Volvo V90 equipped with the \u003cstrong\u003eB6304S\u003c\/strong\u003e 2.9L DOHC inline-six engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the iridium spark plugs pre-gapped for this application?\u003c\/strong\u003e\u003cbr\u003e Yes, the spark plugs come pre-gapped to factory specification for immediate installation, eliminating the risk of electrode damage.\u003c\/p\u003e\n\n\u003ch3\u003eThe Volvo Precision Standard\u003c\/h3\u003e\n\u003cp\u003ePreserve authentic Scandinavian touring performance with high-tolerance ignition components engineered to eliminate false misfire detection and keep your Bosch Motronic EMS fully free of check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593940701432,"sku":"DS-E80HKRMUR","price":109.95,"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-v90-1997-1998-2-9l-1.jpg?v=1790054424","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-volvo-v90-1997-1998-2-9l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}