Set of 8 Ignition Coil Pack DG521 and Iridium Spark Plugs SP509 Compatible with Lincoln Navigator LT Expedition Explorer Mustang F150 F250 F350 Super Duty V8 V10 4.6L 5.4L 6.8LFREE AND FAST SHIPPING! About this item
- 【 DIRECT FIT FOR MULTIPLE VEHICLE MODELS 】 This Ignition Coil Pack fits your 4.6L/5.4L V8 – for Ford (F-150 2008-2010 5.4L, Expedition 2008-2009 5.4L, Explorer Sport Trac 2008-2010 4.6L, Mustang 2008-2010 4.6L, F-250/F-350 Super Duty 2008-2010 6.8L V10, F-450/F-550 Super Duty 2015-2016 6.8L V10, and F53), for Lincoln Navigator 2008-2009 5.4L, and for Mercury Mountaineer 2008-2010 4.6L. Replace all 8 coils and plugs at once to stop misfires, rough idle, check-engine lights – restore lost power and throttle response.
- 【 OEM-PERFECT FIT WITH A TWIST 】 Precision-molded to meet OEM specs – no modifications, no splicing wires. Coils directly replace DG521, FD509, 8L3Z12029A, 5C1716, E509, IC697, C1659, GN10233, and more. Spark plugs directly replace SP509 (PZNAR6A11H). Spark plugs come pre-gapped – pull them out of the box and install immediately. Crucial Warning: Torque plugs to precisely 25–30 N·m (22 ft-lbs). Over-tightening will strip the shallow aluminum threads on these Ford modular V8 heads – strongly recommend using a torque wrench.
- 【 BUILT FOR UNDER-HOOD HELL 】 We didn't just copy the OEM; we upgraded the guts. Coils are wound with German-imported enameled copper wire and potted in Japanese epoxy resin to withstand extreme vibration. Silicone boots resist the brutal 105°C (peak 125°C) heat that cooks cheaper coils. Say goodbye to cracked boots leaving you stranded on the highway – these are tested from -40°C to survive Alaskan winters and Arizona summers.
- 【 WHY IRIDIUM? 】 The ultra-fine iridium electrode fires a concentrated, powerful Spark Plug even under heavy load – whether you're towing with your F-250 or hauling with your Expedition. The isostatic ceramic insulator prevents carbon tracking and flashover, ensuring consistent combustion for 60,000+ miles. Expect fewer fuel-wasting misfires, smoother idle, and noticeably quieter engine at highway speeds.
- 【 WE'VE GOT YOUR BACK – LITERALLY 】 Buying an ignition coils pack online can be risky – we get it. That’s why we back this kit with a 1‑Year No‑Questions‑Asked Replacement Promise (failed coil? we ship a new one ASAP – no hassle, no runaround). Before installation, send us your VIN or Year/Make/Model and we’ll double‑check fitment within 12 hours (avg. real reply: 6.2 hrs). We’ve verified over 2,001 vehicle builds – ask us first, then install your ignition coils pack with confidence.
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