BELKEBIR Ignition Coil Packs & Iridium Spark Plug Kit — Set of 8 for Ford V8 5.4L/4.6L, OEM-Fit & Long-Life

If your Ford V8 is showing rough idle, misfires, or reduced throttle response, this BELKEBIR set provides all eight coil packs and matching iridium plugs designed to fit model years and engine families listed for a direct, plug-and-play swap. The kit is built to meet OEM fit and electrical requirements while using iridium electrodes to extend service life compared with standard plugs. It’s intended as a complete ignition refresh when multiple coils or plugs show wear or when you want uniform performance across all cylinders.

Which Ford, Lincoln and Mercury vehicles will these parts fit?

These coil packs and plugs are compatible with a wide range of Ford V8 applications in both 5.4L and 4.6L engine families. Compatibility covers many model years for F-Series trucks, Expeditions, Excursions, E-Series vans, Crown Victoria, Mustang, Town Car and several Mercury models. Always verify engine displacement and year against your VIN or existing part numbers before ordering.

• 5.4L V8: select F-150, F-250, F-350, Expedition, Excursion, E-150/250/350 models (late 1990s–2008 depending on model).
• 4.6L V8: compatible with Crown Victoria, Mustang, F-150, Expedition, Explorer, Town Car, Grand Marquis, Mountaineer (various years 1998–2010).
• Cross-references: DG508, FD503, SP479 and many OEM Ford part numbers for quick match checks.

How will changing all eight coil packs and plugs improve engine behavior?

Replacing the entire ignition set reduces cylinder-to-cylinder variability that causes rough running, hesitation, and diagnostic trouble codes. New iridium plugs maintain a consistent spark despite heat and wear, while fresh coils deliver stable voltage to each plug. Together they help the engine run more smoothly and maintain designed fueling and timing behavior.

• Reduces misfire codes and erratic idling caused by weak coils or worn electrodes.
• Improves throttle response and consistent power delivery across cylinders.
• Supports more reliable cold starts thanks to iridium’s stable ignition properties.

What are the key features and installation highlights?

The kit includes eight BELKEBIR coil packs and eight iridium spark plugs engineered for a direct OEM-style replacement. Components are manufactured to match electrical and mechanical specifications so they install without modification. You’ll get long-life iridium tips plus coils with correct connectors and mounting to minimize fitment hassles.

• Plug-and-play design—no adaptations needed for compatible vehicles.
• High-energy coil design tuned for V8 ignition requirements.
• Iridium electrodes for increased wear resistance and longer intervals between changes.

Are these parts the same as the factory items and which part numbers do they replace?

Yes — the BELKEBIR set is produced to meet or exceed factory dimensions and electrical outputs, serving as direct replacements for many OEM numbers. The listing cross-references a range of Ford part numbers and aftermarket equivalents so you can confirm interchangeability before purchase. Proper match ensures connectors, thread sizes, and heat ranges align with your engine.

• Common cross-references include DG508, FD503, SP479 and multiple Ford OEM codes.
• Designed to match original mounting points, plug gap, and coil resistance.
• Sold as a full eight-piece ignition set—ideal for complete system refresh.

Who is this for: This BELKEBIR ignition kit is intended for owners and mechanics servicing Ford, Lincoln, or Mercury V8 engines who want a complete, matched set for restoring ignition performance. It’s especially suitable when multiple misfires or aged components appear, when a consistent long-term repair is preferred over piecemeal parts, or when you need OEM-compatible replacements that simplify installation and diagnostics.