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Spark Plug for 2006 Ford Expedition

We have 2 Items In-stock. Select your vehicle's Submodel to continue.

MSD - Iridium Performance Spark Plugs


These MSD performance spark plugs are made from extra tough and highly conductive Iridium along with a copper core and special ceramic casing to produce a hot spark that also stays cool to avoid detonation. They’re designed specifically to work with high output ignition systems such MSD’s and you can find them on the world’s fastest vehicles. From ignitions to distributors, starters to coils, from spark plugs to plug wires, there’s an MSD product to help you get the most out of your engine.

  • Used by top fuel drag cars, off-roaders and stock cars
  • Maximizes the power of high output ignitions
  • Iridium high-conductivity produces hot ignition spark
  • Center ground strap contains Yttrium for its high heat resistance
  • Spark isolation is improved thanks to high dielectric-strength ceramics
  • Heat-transferring copper core stays cooler to last longer
  • Machined electrodes for better flame exposure, improved combustion

MSD Iridium Spark Plug - Direct fit

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  • Brand SKU#: MSD 37164
  • Series: MSD Iridium
  • Product Fit: Direct fit
  • Quantity Sold: Set of 4
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Iridium
  • Heat Range: 6
  • Notes: 9/16 in. hex size; Projected insulator type; Tapered seat style; Iridium power electrode configuration
  • Reach: 20.6 mm
  • Thread Size: 16 mm
  • Warranty: 1-year MSD limited warranty
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Fits the following 2006 Ford Expedition Submodels

  • 8 Cyl 5.4L | XLS, Eddie Bauer, XLT, XLT Sport, Limited, King Ranch
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