{"product_id":"ignition-coil-and-iridium-spark-plugs-for-audi-a4-1997-2000-1-8l","title":"Ignition Coil and Iridium Spark Plugs for Audi A4 (1997-2000) 1.8L","description":"\u003ch2\u003eHigh-Dielectric Ignition Coil and Iridium Spark Plug Kit for 1997-2000 Audi A4\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Direct-replacement ignition service kit engineered to restore factory secondary ignition voltage, maintain precise combustion timing, and eliminate cylinder misfires under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock A4 Thermal Breakdown and Spark Blowout Issue\u003c\/h3\u003e\n\u003cp\u003eOn the longitudinal 1.8T 20V platform, factory ignition coils sit in tight valve cover recesses directly exposed to severe cylinder head heat soak. Over thousands of thermal cycles, the OEM internal epoxy and winding insulation degrade, increasing electrical resistance and leading to high-voltage leakage. This breakdown results in weak spark energy, premature electrode wear, rough idling, hesitations under boost pressure, and recurring P0300-P0304 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis ignition kit pairs four reinforced coil-on-plug units with fine-wire iridium spark plugs for maximum thermal resilience. The replacement coils feature high-purity internal copper windings, blade terminal connectors, and an advanced potting compound designed to insulate against dielectric breakdown under elevated engine bay temperatures. The matched iridium plugs require lower ionization voltage, reducing thermal stress on the coils while providing a stable, erosion-resistant spark kernel that resists fouling.\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;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1997-2000 Audi A4\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1.8T 20V (AEB \/ ATW) \/ B5 Chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e150 hp \/ 155 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eUF274 \/ UF-274\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1997 Audi A4 1.8L L4 Turbo (AEB Engine)\u003c\/li\u003e\n  \u003cli\u003e1997 Audi A4 Quattro 1.8L L4 Turbo (AEB Engine)\u003c\/li\u003e\n  \u003cli\u003e1998 Audi A4 1.8L L4 Turbo (AEB Engine)\u003c\/li\u003e\n  \u003cli\u003e1998 Audi A4 Quattro 1.8L L4 Turbo (AEB Engine)\u003c\/li\u003e\n  \u003cli\u003e1999 Audi A4 1.8L L4 Turbo (AEB \/ ATW Engine)\u003c\/li\u003e\n  \u003cli\u003e1999 Audi A4 Quattro 1.8L L4 Turbo (AEB \/ ATW Engine)\u003c\/li\u003e\n  \u003cli\u003e2000 Audi A4 1.8L L4 Turbo (ATW Engine)\u003c\/li\u003e\n  \u003cli\u003e2000 Audi A4 Quattro 1.8L L4 Turbo (ATW Engine)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Audi Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to satisfy strict European engine management parameters, this kit maintains clean signal integrity with the Motronic ECU to ensure stable idle control, seamless throttle response, and zero check-engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50456048107768,"sku":"DS-E97P65E1W","price":123.95,"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-audi-a4-1997-2000-1-8l-1.jpg?v=1788757528","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-audi-a4-1997-2000-1-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}