MAS Ignition Coil and Spark Plug Kit for 4.6L V8 – Set of 8 DG508 Replacement with Motorcraft SP493, High‑Energy Coils

Complete 8‑coil kit with a Motorcraft SP493 spark plug — engineered to match factory fit and restore reliable ignition for 4.6L Ford, Lincoln, and Mercury engines.

This MAS combination pack includes eight high‑energy ignition coils (replacement for DG508 series) paired with a Motorcraft SP493 spark plug, supplied to replace worn or failing ignition components on 4.6L V8 engines. The set is designed to meet or exceed OE electrical and thermal standards so you can swap coils and plugs in one service visit. Before buying, please verify fitment against your vehicle's year, engine code, and dealer part numbers to ensure compatibility.

How will these coils and the SP493 plug improve my vehicle's ignition performance?

Upgrading to fresh coils and a correctly gapped Motorcraft SP493 restores consistent spark delivery and helps maintain smooth combustion across all cylinders. New coils reduce misfires caused by cracked housings or degraded insulation, while a fresh spark plug ensures reliable ignition timing and fuel burn.

• High energy output coils designed for direct fit on 4.6L V8 cylinder heads.
• Heat‑resistant boot compound to withstand under‑hood temperatures.
• Motorcraft SP493 spark plug delivers consistent spark gap and electrode durability.
• Includes 8 coils for full V8 replacement—one plug included for reference or paired servicing.

Which vehicle models and part numbers does this MAS kit replace?

The kit is made to be compatible with many Ford, Lincoln, and Mercury 4.6L engine applications. It replaces a long list of OE references so you can cross‑check part numbers and compatibility prior to installation.

• Common replaced coil references: DG508, DG457, DG472, DG491.
• Spark plug reference included: Motorcraft SP493.
• Also cross‑references dealer numbers such as 3W7Z12029AA, 1L2U12029AA and 1L2U12A366A among others.
• Always compare the pictures and part numbers with your existing components before ordering.

How simple is the installation and what should I check before starting?

Installation is straightforward for anyone comfortable with basic engine‑bay work: remove the old coil boots and connectors, swap in the new coils, and torque to factory specs. Inspect wire connectors and coil mounting surfaces for corrosion or damage and replace any additional worn hardware for longest service life.

• Direct bolt‑on replacement for coil‑on‑plug assemblies—no modification required.
• Use OEM torque values for coil retention bolts and ensure electrical connectors lock fully.
• Check plug gap and condition if replacing spark plugs beyond the supplied Motorcraft unit.
• Replace coils in sets for consistent cylinder performance—this kit contains 8 coils for full coverage.

What materials and quality checks are used in MAS ignition coils?

MAS coils are engineered to meet OE electrical and thermal tolerances, using high‑grade winding and insulation materials. Each coil is tested to verify output and resistance so they deliver stable performance under common driving stresses.

• High temperature resistant boot compound to resist heat and ozone breakdown.
• Precision winding and molding to maintain consistent primary/secondary characteristics.
• Manufactured to achieve or exceed original equipment specifications with quality control testing.
• Supplied as an 8‑coil set so all cylinders receive matched replacement components.

Who is this for: This MAS ignition coil and Motorcraft SP493 spark plug kit is aimed at owners and technicians working on Ford, Lincoln, and Mercury vehicles equipped with 4.6L V8 engines who want a cost‑effective, full‑set replacement. It's ideal for anyone facing misfires, rough idle, reduced fuel efficiency, or for preventive maintenance when performing a comprehensive ignition system service. Always confirm fitment with your vehicle's specific part numbers and compare the product images to your original parts before purchase.