GBTAD Ignition Coil and Spark Plug Kit for 3.5L V6 (Set of 6) — UF646/DG549 Coils with SP580 Plugs, Upgraded Conductivity

If your 3.5L EcoBoost or naturally aspirated V6 is showing misfires, rough idle, poor fuel economy, or intermittent check-engine lights, worn coils and plugs are a common cause. This GBTAD kit pairs six upgraded UF646/DG549 coils with six high-quality SP580/SP534 spark plugs, assembled to meet or exceed OE fit and function. The set targets a broad swath of Ford and Lincoln vehicles—F-150, Expedition, Explorer, Taurus, Transit series, Flex, Police Interceptors, MKS, MKT, and Navigator—so you can replace every cylinder's ignition components at once for consistent performance across the engine.

Which vehicles and engines will this kit fit?

This complete set is made for the 3.5L V6 engines used across many Ford and Lincoln models from 2011 through 2020. Compatibility covers specific year ranges for each model, so always verify against your vehicle's year, make, model and the original equipment part numbers before ordering. The listing includes common applications like EcoBoost F-150 and Transit vans as well as Lincoln SUVs and Police Interceptor variants.

• Ford: F-150, Expedition, Explorer, Flex, Taurus, Transit-150/250/350/350 HD, Police Interceptor Sedan/Utility (3.5L V6)
• Lincoln: MKS, MKT, Navigator (3.5L V6)
• Check OE numbers: UF646/DG549 for coils and SP580/SP534 for plugs

How do these GBTAD coils and plugs improve engine performance?

GBTAD designs the coils with aerospace-grade copper conductors and high-density epoxy for stronger conductivity and better heat resistance. When paired with the correct spark plugs, the combination produces a more consistent spark, which helps reduce misfires and supports smoother throttle response without altering engine tuning.

• Improved conductivity from premium copper wire construction
• High-density epoxy increases moisture and vibration resistance
• Matched coil-to-plug set ensures uniform ignition across all cylinders

What should I expect during installation and maintenance?

Installation is straightforward for anyone comfortable with basic engine-bay work: remove the engine cover, unplug old coils, swap spark plugs, and install the new coils. Torque the plugs and secure electrical connections to factory specifications to avoid damage. If you prefer, a professional mechanic can fit the kit quickly and confirm proper clearance and boot seating for turbo-equipped engines.

• Tools needed: ratchet, spark plug socket, torque wrench, basic hand tools
• Recommended to replace all six coils and plugs at once for even performance
• Follow vehicle torque specs and safety procedures—disconnect battery if necessary

What warranty and support does GBTAD provide?

The kit ships with a quality assurance pledge and customer support for any post-purchase issues. Contact GBTAD customer service if you find manufacturing defects or parts that arrived damaged so they can guide you through replacement or refund options. Routine checks after installation will help ensure long-term reliability.

• GBTAD quality assurance—contact support for defective items
• Inspect connectors and boots during installation to confirm proper seating
• Store unused parts in a dry, clean place until installation

Who is this for: This GBTAD Set of 6 UF646 ignition coils and matching spark plugs is designed for DIY mechanics and professional technicians who own or service Ford and Lincoln vehicles with the 3.5L V6 from model years 2011–2020. Choose this kit if you want a full-cylinder replacement to address ignition-related drivability issues, to preemptively renew aging ignition components, or to maintain consistent performance after turbo or high-mileage use. Always confirm fitment with your vehicle's year and OE part numbers before purchase.