6-Pack Ignition Coil Set UF646 Compatible with Ford 3.5L EcoBoost

In this review the 6-Pack Ignition Coil Set UF646 is evaluated for owners of Ford and Lincoln vehicles with the 3.5L EcoBoost V6 from 2011 to 2019. The bottom line: this kit is for drivers who need a direct-replacement ignition coil and spark plug solution that restores reliable spark and helps reduce turbo lag on startup. The reviewer found the set to be straightforward to install, designed to OE fit and voltage specs, and particularly useful for troubleshooting misfires or dull throttle response after long service intervals.

Key Features

• Direct OE compatibility: Replaces UF646, DG549 and related OE references to ensure proper fit and electrical match for affected Ford and Lincoln 3.5L EcoBoost engines.
• Complete 6-pack kit: Includes six ignition coil packs plus six double iridium spark plugs so the entire V6 bank can be serviced at once for consistent combustion across cylinders.
• Designed for turbocharged V6: Engineered to restore strong spark under boost, which helps reduce turbo lag during startup and improves throttle response.
• Intended performance consistency: Built to OE fit and voltage specs to maintain factory ignition timing and reliable spark delivery under normal and heavy-use conditions.
• Wide vehicle fitment: Covers many Ford and Lincoln applications including F-150, Explorer, Expedition, Taurus, Flex, Transit, and Lincoln MKS/MKT/Navigator for model years noted.

Who It's For

This kit is aimed at do-it-yourselfers and independent mechanics who own or work on 3.5L EcoBoost V6 Ford or Lincoln vehicles from roughly 2011 through 2019 and want a single-purchase repair that addresses ignition coil and spark plug wear. It is also appropriate for commercial users of Transit models who need factory-style replacements for service vehicles.

Those who should look elsewhere are owners of engines outside the specified 3.5L EcoBoost range or shoppers seeking OEM-branded parts from the original vehicle manufacturer. Buyers who need a single coil rather than a full six-pack may prefer to source individual coils.

Pros & Cons

Pros

• Direct-replacement fit for many Ford and Lincoln 3.5L EcoBoost applications simplifies installation.
• Includes six coils and six double iridium plugs for a full-bank service and consistent combustion.
• Many customers report easy installation and good value for money when compared to sourcing separate components.

Cons

• Quality feedback is mixed from some users, so expectations should be aligned with value-oriented aftermarket parts.
• Not an OEM-branded part, which may concern buyers seeking factory warranty or original supplier packaging.

Specifications

Our Verdict

The 6-Pack Ignition Coil Set UF646 is a pragmatic, cost-effective option for owners of 3.5L EcoBoost Ford and Lincoln vehicles who want to replace all coils and plugs at once to restore ignition consistency. It offers OE-style fit and voltage specs and is especially useful for addressing misfires or sluggish startup behavior, though buyers seeking factory-branded parts or the highest-end aftermarket quality may prefer OEM sources.

Frequently Asked Questions

Will this kit fit my 2015 F-150 3.5L EcoBoost?
Yes, the kit lists fitment for 2011-2015 F-150 3.5L Turbo applications and is intended as a direct replacement for those model years.

Are spark plugs included with the coils?
Yes, the kit includes six double iridium spark plugs along with the six ignition coil packs for a full-bank replacement.

Does this match OEM electrical specs?
The product is built to OE fit and voltage specs and replaces common OE reference numbers for compatible engines.