{"product_id":"ignition-coil-spark-plugs-for-lincoln-mark-lt-2006-2008-5-4l","title":"Ignition Coil + Spark Plugs for Lincoln Mark LT (2006-2008) 5.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Replacement Ignition Coil and Spark Plug Kit for 2006-2008 Lincoln Mark LT (P221)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Ignition Coil and Spark Plug Kit replaces worn secondary ignition hardware on the 2006-2008 Lincoln Mark LT to eliminate misfires, stabilize engine idle, and restore peak combustion efficiency under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lincoln Mark LT Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder continuous thermal stress inside the \u003cstrong\u003eP221\u003c\/strong\u003e engine bay, factory \u003cstrong\u003eFD508\u003c\/strong\u003e and \u003cstrong\u003eDG511\u003c\/strong\u003e coil packs suffer dielectric breakdown. Heat cycles crack the internal epoxy resin, allowing secondary voltage to leak to ground rather than reaching the cylinder. Coupled with carbon-eroded electrode gaps on aging \u003cstrong\u003eSP515\u003c\/strong\u003e spark plugs, ignition resistance spikes. This overtaxes the primary winding circuits, triggering low-RPM hesitation, erratic idle, reduced fuel economy, and persistent P0300 through P0308 diagnostic trouble codes during heavy payload demands.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive tune-up kit features eight high-output coil-on-plug (COP) units wound with high-conductivity copper wire and laminated magnetic steel cores to maximize spark energy output. High-dielectric silicone boots isolate peak secondary voltage to prevent arcing and flashover. Paired with fine-wire platinum spark plugs, the assembly minimizes quenching, stabilizes flame-front propagation, and resists erosion under high combustion chamber temperatures without requiring recalibration or harness modification.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e8 Ignition Coils\u003c\/li\u003e\n  \u003cli\u003e8 Platinum Spark Plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2006-2008 Lincoln Mark LT\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;\"\u003e5.4L Triton 3V \/ P221\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;\"\u003e300 hp \/ 365 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;\"\u003eFD508, SP515, 30748, 5071, IGC0116, E508, C1541, C1541-8, C1541DLGKIT, V25-70-0045, 140033K, 140033K-8, 1IC103, 50082, 36-8050, 35-1297, 30731, 30738, 30741, 351297, 420006, C-652, C652M8, 140033, 140033-8, 140033B, 140033B-8, DG511, 221504705, 26338, GN10182, IC558, 82433, 82435, 48717, U5150\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2006 Lincoln Mark LT Base 5.4L V8\u003c\/li\u003e\n  \u003cli\u003e2007 Lincoln Mark LT Base 5.4L V8\u003c\/li\u003e\n  \u003cli\u003e2008 Lincoln Mark LT Base 5.4L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the P221 Mark LT?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2006-2008 Lincoln Mark LT equipped with the \u003cstrong\u003e5.4L Triton 3V\u003c\/strong\u003e engine. \u003cstrong\u003eConfirm your vehicle does not use earlier 2V coil configurations or alternate boot lengths prior to installation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWhat are the critical torque and installation specs?\u003c\/h4\u003e\n\u003cp\u003eTorque all spark plugs to factory spec on a completely cold cylinder head, apply dielectric grease to internal boot terminals, and do not overtighten coil retention bolts.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lincoln Truck Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for full-size luxury utility, these components deliver the ignition durability and spark energy required to maintain smooth power delivery under heavy towing and sustained grade-climbing.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67561479995640,"sku":"DS-E6B2IWW4L","price":124.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-lincoln-mark-lt-2006-2008-5-4l-1.jpg?v=1790964049","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-spark-plugs-for-lincoln-mark-lt-2006-2008-5-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}