ENA 8 Ignition Coil Pack and Iridium Spark Plug Set - Ford 5.4L

In this review the ENA 8 Ignition Coil Pack and Iridium Spark Plug Set is evaluated for owners of Ford F150, Expedition, Super Duty trucks and Lincoln Navigator models with the 5.4L V8 from 2004 to 2008. The bottom line: this kit is for DIYers and mechanics who need a full set of replacement ignition coils and plugs that match the common black, straight-boot coil style; the single biggest reason to buy is the convenience of receiving eight coil packs and eight iridium plugs in one kit, simplifying a full-bank replacement when troubleshooting misfires.

Key Features

• Complete set: Includes a full set of eight ignition coils and eight iridium spark plugs so you can replace the entire bank in one service session.
• Direct fit design: Pack is designed as a bolt-on, plug-and-play replacement for compatible black, straight-boot coils to speed installation and reduce bench modifications.
• Iridium plugs: The included spark plugs use an iridium center electrode to promote a consistent spark and potential fuel efficiency improvement.
• Vehicle coverage: Fits many 2004-2008 Ford and Lincoln V8 5.4L applications including F150, Expedition, F250-F550 Super Duty, Navigator and Mark LT when coil appearance matches.
• Durability and warranty: Coils and plugs are built with durable materials and the package includes a 12-month warranty for extra buyer protection.
• Clear fitment caveat: Only replaces coils with black, straight boots and is not compatible with V10 engines or coils with brown or curved boots, preventing incorrect purchases when checked beforehand.

Who It's For

This kit is best for vehicle owners or independent shops that need to replace all eight coils and plugs at once on 5.4L Ford and Lincoln V8 engines from 2004 to 2008 and who can confirm their original coils have black, straight boots. It is also useful for troubleshooting persistent misfires where swapping a full bank eliminates variances between old and new components.

It is not for owners of V10 engines or vehicles with different coil boot styles; those customers should look for products specified for their plug or coil mounting style. Buyers who require OEM-branded parts or specific aftermarket certifications may also prefer alternative sources.

Pros & Cons

Pros

• Good value for replacing an entire bank with one purchase instead of sourcing parts separately.
• Easy to install for DIYers because of the bolt-on terminal and plug-and-play fit when coil style matches.
• Iridium spark plugs provide a precise center electrode for more consistent spark performance.

Cons

• Some customers reported inconsistent component quality, including defective coils or incorrect plugs, so inspection on receipt is recommended.
• Compatibility is strictly limited to coils with black, straight boots; wrong coil appearance will not work.

Specifications

Package Content	8 ignition coils and 8 iridium spark plugs
Compatible Engines	Ford/Lincoln V8 5.4L (2004-2008 models where noted)
Coil Voltage	12V
Coil Mount Type	Bolt on
Spark Plug Tip	Iridium center electrode
Spark Plug Gap	0.043 in
Spark Plug Thread	16 mm

Our Verdict

The ENA 8 coil pack and spark plug set is a practical, cost-effective option for owners of 5.4L Ford and Lincoln V8s who need a full-bank replacement and who verify their coils have black, straight boots. While some users have reported quality control issues with individual components, the complete-package convenience, iridium plugs and 12-month warranty make it a reasonable value for drivers prepared to inspect parts on arrival and swap the entire bank to address misfires.

Frequently Asked Questions

Will these coils fit my V8 5.4L?
They fit 2004-2008 Ford and Lincoln 5.4L V8 models listed if your original coils have black, straight boots; they are not compatible with V10 engines or coils with brown or curved boots.

Are the spark plugs iridium?
Yes, the included spark plugs use an iridium center electrode and have a 0.043 in gap and 16 mm thread diameter.

Is installation difficult?
Installation is straightforward for people comfortable with basic engine work because the coils are bolt-on with a plug-and-play design, but always verify fit and inspect parts before installation.