CarBole Ignition Coil & Spark Plug Kit for Ford 5.4L — 8-Coil/8-Plug Full-Bank Replacement (DG508 / SP-497)

If your Ford vehicle is showing signs of rough idle, intermittent misfires, or reduced responsiveness, replacing coils and spark plugs together is a practical step. This CarBole set contains matched coil packs and OEM-equivalent plugs designed to meet original equipment standards for select Ford and Lincoln vehicles built between 1998 and 2008. The package provides a full-bank replacement so you can refresh the entire ignition side at once, reducing troubleshooting and future mismatches.

Which vehicles and engines will this kit fit?

This set is intended for a range of Ford and Lincoln models using the 5.4L engine and compatible ignition systems. It covers many Econoline vans, Excursion, Expedition, F-series trucks, and early Navigator models within the specified years. Always cross-check your vehicle’s part numbers or consult the vehicle VIN to confirm fitment before purchase.

• Ford E-150, E-250, E-350 (1998–2008) and E-450 (1999–2008)
• Ford Excursion (2000–2005) and Expedition (1998–2004)
• Ford F-150 (1998–2003 5.4L; 2004 Heritage 5.4L), and F-250/F-350/F-450/F-550 Super Duty variants (1999–2004)
• 1998 Ford Econoline Super Duty and 1998–1999 Lincoln Navigator

What parts are included and which OEM codes do they match?

The kit ships with eight curved DG508-type coils plus eight SP-497 spark plugs, matching a broad set of coil and plug OEM cross-references. These components are manufactured to meet OEM-level specifications so they can replace a variety of factory coil part numbers without requiring additional adapters.

• Included: 8 x DG508-style ignition coils and 8 x SP-497 spark plugs
• Coil cross-refs include DG457, DG472, DG491, DG467, DG473, DG481, DQ50101, F523 and many factory codes
• Spark plug cross-refs include AGSF22WM, AGSF22WMF4, AWSF22E equivalents

How does replacing coils and plugs together help performance?

Replacing ignition coils and spark plugs at the same time promotes consistent spark delivery across all cylinders and simplifies diagnostics. Old or mismatched ignition parts can cause misfires, rough idling, decreased fuel economy, and harder starts; renewing the entire bank reduces those risks and helps restore smoother engine behavior.

• Ensures matched electrical characteristics across all cylinders
• Reduces likelihood of repeated diagnostic visits and part swapping
• Helps maintain more consistent combustion and throttle response

What should I know before installation?

Installation is straightforward for technicians and experienced DIYers, but basic tools and safety precautions are required. Always disconnect the battery, allow the engine to cool, and follow torque specs for spark plugs. If you’re unsure about compatibility or electrical connectors, consult a repair manual or a professional mechanic.

• Disconnect battery and work on a cool engine to avoid damage
• Use a torque wrench and follow spark plug torque specifications
• Verify electrical connector fit and secure coil mounting to prevent future faults

Who is this for: This CarBole ignition coil and spark plug set is aimed at owners and mechanics of older Ford and Lincoln vehicles with the 5.4L engine who want a full-bank replacement to restore ignition reliability. It’s ideal for fleet maintenance, restoration projects, or anyone troubleshooting misfires and performance irregularities who prefers replacing matched components together rather than piecemeal swaps.