MAS Ignition Coil and Spark Plug Kit for Ford 4.6L V8 — Set of 8 Coils (DG508) + SP493 Plugs, OE-fit High-Energy

MAS Set of 8 ignition coils (DG508) with Motorcraft SP493 spark plugs is a complete replacement kit designed to restore reliable ignition performance for Ford, Lincoln and Mercury 4.6L V8 engines.

This kit pairs eight MAS high-energy ignition coils with eight Motorcraft SP493 spark plugs, engineered to meet or exceed original equipment specifications for a direct-fit swap on many 4.6L applications. It replaces multiple OE part numbers so you can match fitment against your vehicle's original parts and restore consistent starting, idle stability, and throttle response without modifying the engine harness or mounting points.

Which vehicles and engines does this kit fit?

The MAS kit is intended for Ford-Lincoln-Mercury 4.6L V8 applications where the original coils and plugs match the listed replacement numbers. Always confirm fitment by comparing the supplied images and part numbers to your factory components before purchase.

• Compatible with many 4.6L V8 models across Ford, Lincoln, Mercury
• Replaces OE references such as DG508, DG491, SP493 and listed dealer numbers
• Fits coil-on-plug configurations using the specified mounting and electrical connector
• Verify fit using your vehicle’s VIN or the original coil/plug part numbers

How do these ignition coils and spark plugs improve engine performance?

Each MAS coil is manufactured to meet OE standards for energy output and thermal durability, paired with Motorcraft SP493 plugs for reliable spark delivery. Together they help restore ignition consistency, which can reduce misfires and improve drivability when installed correctly.

• High-energy coil design for stable spark at all RPMs
• Heat-resistant coil boot compound for longevity under engine heat
• OE-spec spark plugs for correct gap and electrode durability
• Complete eight-coil and plug set minimizes mismatch across cylinders

What should I know about installation and maintenance?

Installation follows a direct-replacement process: remove the old coil and plug, inspect the spark plug well, install the new plug to proper torque, then seat the new coil. No special modifications are required, but proper torque and connector seating are important for reliable operation.

• Compare pictures and part numbers before beginning work
• Use a torque wrench for spark plug installation to manufacturer specs
• Inspect wiring and coil mounting studs for corrosion or damage
• Replace all coils and plugs in the bank to maintain consistent performance

Which OE and aftermarket part numbers does this kit replace?

This MAS+Motorcraft kit lists many cross-references to help you confirm compatibility with dealer and aftermarket catalogs. It replaces common coil and plug references used across 4.6L engine applications so you can match legacy parts quickly.

• Coil references: DG508, DG491, DG457, DG472 and more
• Spark plug reference: Motorcraft SP493
• Dealer cross-refs include 3W7Z12029AA, 1L2U12029AA, 1L2U12A366A and others
• Check the full replacement list against your original part numbers

Who is this for? This MAS set is aimed at technicians, DIY enthusiasts, and fleet owners who need a complete ignition refresh for Ford 4.6L V8 engines. If you want a full-bank replacement—matching coils and OEM-standard plugs—to address misfires, rough idle, or preventative maintenance, this kit provides a straightforward, direct-fit solution when confirmed against your vehicle’s factory parts.