NPAUTO Ignition Coil Pack 6-Pack for 3.5L V6 EcoBoost – UF646 Full-Bank Replacement, Restores Engine Performance

NPAUTO's set of six ignition coil packs (UF646) replaces worn coils on 3.5L V6 EcoBoost engines for a reliable spark and restored engine performance.

These replacement ignition coils are engineered as high-performance aftermarket parts designed to directly fit many Ford and Lincoln models equipped with the 3.5L V6 EcoBoost engine. Sold as a complete kit of six coils, this pack matches common OEM and aftermarket part numbers so you can remedy misfires, rough idling, and power loss without replacing coils one at a time. Before purchasing, verify vehicle-year compatibility using the included fitment list and the interchange numbers to ensure a correct match.

How will these coils affect everyday driving?

Replacing old or failing ignition coils helps restore consistent combustion across all cylinders, which often improves throttle response, smoother idling, and fuel efficiency. The NPAUTO coils are designed to provide stable spark delivery under varied driving conditions typical for trucks, SUVs, and sedans.

• Set includes six coils for full-bank replacement on 3.5L V6 EcoBoost engines.
• Engine performance improvements: reduced misfires, steadier idle, better throttle response.
• Compatible with stop-and-go city driving and towing loads common to F-150 and Expedition owners.

Which vehicles and part numbers are these coils compatible with?

The kit fits many Ford and Lincoln models from 2011 through 2020 that use the 3.5L V6 EcoBoost. The listing references multiple interchange numbers so you can cross-check with your factory part number or service manual before ordering.

• Typical fits: Ford F-150 (2011–2019), Expedition (2015–2017), Explorer (2013–2019), Flex (2013–2019).
• Also fits: Lincoln MKS, MKT (2013–2016) and Navigator (2015–2017), Taurus (2013–2016), Transit vans (2015–2020).
• Interchange numbers: UF646 UF-646 DG549 DG-549 IC749 BL3Z-12029-C and related codes listed.

What symptoms indicate it's time to replace the ignition coils?

Common signs of failing coils include engine misfires, illuminated check engine light with cylinder-specific codes, rough idle, and reduced acceleration. Addressing coil failure promptly can prevent catalytic converter damage and restore normal drivability.

• Check engine light with P030x (misfire) codes or rough-running cylinders.
• Noticeable drop in power, hesitation under load, or inconsistent idle.
• Replacing all six coils at once avoids repeated labor and mixed-age components.

How difficult is installation and what should I prepare?

Installation is straightforward for someone with basic mechanical skills and common hand tools. Access to the ignition coil bank typically requires removing an engine cover; each coil press-fits to the spark plug and plugs into the wiring harness, so careful connector release and proper torque on fasteners are advised.

• Tools: basic socket set, torque wrench recommended, dielectric grease optional for boots.
• Time: a DIY-savvy technician can change all six coils in one to two hours depending on vehicle layout.
• Tip: clear diagnostic codes after installation and verify smooth idle and no misfire codes.

Who this is for: This NPAUTO UF646 six-coil pack is intended for owners and technicians servicing Ford F-150, Expedition, Explorer, Flex, Lincoln, Transit, Taurus and related models equipped with the 3.5L V6 EcoBoost who want a complete, cost-effective replacement. It's suitable for those replacing failed coils to eliminate misfires and for preventive maintenance when addressing age-related ignition wear. Confirm fitment against your vehicle year and part numbers before purchase to ensure compatibility.