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Review on πŸ”₯ MAS Ignition Coils DG521 and Motorcraft SP-509 Spark Plugs: Ford Expedition & F-Series Compatible - 6.8L, 5.4L, 4.6L, C1659 DG521 8L3Z-12029-A by Francisco Taylor

Revainrating 5 out of 5

More affordable option with great performance

Install it on a 2008 F350 with over 450,000 km and the new ignition system will really wake the truck up. Later the truck was sold after the conversion and the next owner is still running without problems. Also, the 3-valve engines they are designed for have an improved head design over 2-valve engines with aluminum heads that tend to spit out plugs. Easy to install and high quality coils along with OEM connectors.

Pros
  • Ideal for outdoor activities
Cons
  • Some difficulties