{"product_id":"ignition-coil-iridium-spark-plugs-for-bmw-5-series-8-series-1994-1995-3-0l-4-0l","title":"Ignition Coil + Iridium Spark Plugs for BMW 5 Series 8 Series (1994-1995) 3.0L 4.0L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Kit for 1994-1995 BMW 5 Series, 8 Series\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete direct-fit ignition kit restores factory combustion efficiency and delivers high-dielectric spark output to eliminate misfires across the 1994-1995 BMW 5 Series and 8 Series V8 platforms.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStock BMW M60 Ignition Weakness:\u003c\/strong\u003e Over decades of thermal cycling, factory ignition coils on the \u003cstrong\u003eE34\u003c\/strong\u003e and \u003cstrong\u003eE31\u003c\/strong\u003e chassis experience severe epoxy breakdown and internal winding degradation. Tucked beneath dense cosmetic engine acoustic covers, the early \u003cstrong\u003eM60B30\u003c\/strong\u003e and \u003cstrong\u003eM60B40\u003c\/strong\u003e ignition setups undergo excessive heat soak, causing insulation micro-fractures, secondary coil resistance drift, and high-voltage arc blowout under load. Paired with aged, high-resistance standard plugs, degraded secondary voltage produces hesitation, poor idle stability, unburnt hydrocarbon build-up, and check engine lights (CEL) triggered by cylinder-specific misfire codes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Engineering Solution:\u003c\/strong\u003e This precision overhaul kit addresses primary breakdown points by combining eight heavy-duty direct-fit coil-on-plug units with fine-wire iridium spark plugs. Each ignition coil features high-grade magnetic copper windings insulated with premium epoxy potting to withstand continuous engine-bay thermal loads up to 150°C. The matched fine-wire iridium center electrode plugs feature an ultra-dense ceramic insulator, lowering overall breakdown voltage requirements by up to 25% compared to conventional copper. This concentrated, high-energy spark gap guarantees sharp flame front propagation, stabilizes combustion chamber pressures, and restores lost dynamic throttle response without requiring custom harness rewiring or secondary modifications.\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;\"\u003e1994-1995 BMW 5 Series, 8 Series\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;\"\u003eM60B30 (3.0L), M60B40 (4.0L) \/ E34, E31\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;\"\u003e215 hp \/ 214 lb-ft (3.0L), 282 hp \/ 295 lb-ft (4.0L)\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;\"\u003e12131703359, 12131726177, 12131726178, 12131727108, 12131729842, 12131730765, 12131731884, 12139066468, UF226, 7092\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1994-1995 BMW 530i 3.0L V8 (M60B30, E34)\u003c\/li\u003e\n  \u003cli\u003e1994-1995 BMW 540i 4.0L V8 (M60B40, E34)\u003c\/li\u003e\n  \u003cli\u003e1994-1995 BMW 840Ci 4.0L V8 (M60B40, E31)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the E34 and E31 5 Series and 8 Series?\u003c\/strong\u003e\u003cbr\u003e Yes, this kit is engineered specifically as a direct-fit replacement for the 1994-1995 BMW 5 Series (E34) and 8 Series (E31) equipped with the 3.0L M60B30 or 4.0L M60B40 V8 engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these iridium spark plugs require gapping prior to installation?\u003c\/strong\u003e\u003cbr\u003e No, the iridium spark plugs come pre-gapped to factory operating specifications, and manual adjustment is not recommended as it can fracture the fragile fine-wire center electrode.\u003c\/p\u003e\n\n\u003ch3\u003eThe BMW Precision Standard\u003c\/h3\u003e\n\u003cp\u003eBMW's quad-cam M60 V8 relies on microsecond-accurate ignition timing to sustain balanced idle and compliant emissions; installing matched-resistance coils alongside high-temp iridium hardware ensures seamless DME signal integration, steady secondary voltage delivery, and zero check engine light illumination.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50623700533496,"sku":"DS-EWZTTFXYS","price":169.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-iridium-spark-plugs-for-bmw-5-series-8-series-1994-1995-3-0l-4-0l-1.jpg?v=1790298097","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-iridium-spark-plugs-for-bmw-5-series-8-series-1994-1995-3-0l-4-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}