Ignition Coil Pack DG508 + Iridium Spark Plug SP479 Kit - Reliable

In this review the kit is assessed for owners of older Ford and Lincoln V8 models who need a full ignition refresh. The BDFHYK combo pairs ten DG508-compatible ignition coil packs with ten SP479 iridium spark plugs and is aimed at vehicles such as E-150, E-250, F-150, F-250, F-350 and Navigator with 5.4L V8 engines. The single biggest reason to buy is convenience: it supplies a matched set of coils and plugs so owners can replace the entire ignition system at once and address symptoms like rough idle, misfire or slow acceleration.

Key Features

• Complete kit: Includes ten ignition coil packs and ten iridium spark plugs so the entire V8 ignition can be renewed in one service session.
• Wide vehicle fit: Covers many Ford and Lincoln 5.4L V8 applications from late 1990s through mid 2010s, reducing the need to source parts separately.
• Durable coil construction: Coils use silicon steel cores, Japan-imported rubber, and varnished wire to extend service life compared with generic coils.
• Iridium plugs: SP479 spark plugs use an iridium electrode and engineered ceramic to improve starting, throttle response, and longevity over standard plugs.
• OEM cross references: Listed OE references (for example DG457, DG472, and DG508 equivalents) make it easier to verify compatibility with existing parts.
• Manufacturer support: Supplied by a parts maker with over ten years in the field and direct factory experience for after-sale inquiries.

Who It's For

This kit suits DIY mechanics and independent shops working on 5.4L Ford and Lincoln V8s that need a coordinated replacement of ignition coils and spark plugs. It is especially useful when the vehicle shows signs associated with aging ignition components such as rough idle, increased fuel use, or starting issues.

Owners of vehicles outside the stated fit list, or those who prefer OEM-branded parts or individual OEM part numbers for each cylinder, should confirm fitment carefully using the OE references and may prefer to source single coils or plugs matched to dealer specifications instead.

Pros & Cons

Pros

• Good value: a full set of coils and plugs simplifies large-mileage maintenance and reduces per-cylinder cost.
• Easy installation: customers report straightforward fit and straightforward replacement for most compatible models.
• Improved starting and throttle response from iridium plugs and updated coils.
• Detailed OE cross references help verify compatibility before purchase.

Cons

• Fitment is mixed for some specific model years, so buyers must double-check compatibility against the provided OE numbers and vehicle year ranges.
• A few customers reported concerns about long-term durability of individual coils compared with factory units.

Specifications

Our Verdict

The BDFHYK ignition coil and iridium spark plug kit is a practical value play for owners who want to replace an entire ignition system on 5.4L V8 Fords and Lincolns. When fitment is confirmed, it addresses common symptoms and delivers improved starting and response at a lower per-part cost than buying items individually. Confirm OE cross references before ordering and this kit is a sensible, cost-effective service solution.

Frequently Asked Questions

Will this kit fit my 2005 F-150?
Check the detailed fit list and OE cross references shown in the product images and description to confirm compatibility for 2005 F-150 variants.

Are the spark plugs iridium?
Yes, the SP479 plugs use an iridium electrode and engineered ceramic for longer life and quicker starts.

Should I replace coils and plugs together?
If your vehicle has over 80,000 km or shows misfire, rough idle, or slower acceleration, replacing both coils and plugs together is recommended.