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NGK Iridium IX Performance Spark Plugs (83-85 5.0L)

1 Reviews
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(set of 8)
  • Item #64017
  • MPN# 7401

  • Market Price $79.99
  • You Save 13% ($10.00)
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  • Iridium Tip for a Constant Stable Spark
  • Improves Fuel Economy and Lower Emissions
  • Heat Range: 4
  • NGK Part# 7401
  • Fits 1983-1985 5.0L V8 Mustangs
  • Sold as a Set of 8
High Performance. Keeping your Mustangs high performance engine running smoothly and efficiently is important, so routinely replace your old weak plugs with a new set of NGK Iridium IX Performance Spark Plugs for constant reliable spark power. The Iridium IX plugs from NGK will provide improved throttle response, fuel efficiency, lower emissions, and will reduce fouling.

Superior Materials. NGK Iridium IX Performance Spark Plugs feature a copper core electrode for its superior conductivity and an iridium tip (which is 6X harder than platinum) for it's extremely high melting point, perfect for keeping your Mustangs high-performance engine running at it's peak. And as an added bonus the Iridium IX plug features Trivalent Metal Plating for it's superior anti-corrosion and anti-seizing properties.

Application. This set of eight (8) NGK Iridium IX Performance Spark Plugs are specifically designed as a direct fit replacement for the 1983-1985 Mustangs equipped with the 5.0 liter V8.

Fitment: 1983 1984 1985 Details

What's in the Box
  • (8) Spark Plugs
Installation Info
Will it fit my Mustang?
  • Foxbody - 83, 84, 85

Fits 5.0L V8's Only

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Customer Reviews (1) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Afternoon

  • Performance Gain 5 5
  • Fit 5 5
  • Bang For Your Buck 5 5

  • 5/5

    Installation Time: Afternoon

    December 19, 2014

    Major tune up

    I ordered the iridium spark plugs, American racing spark plug wires ,MSD distributor cap and rotor and the MSD coil all at once . The wires were all cut to length and numbered for easy installation .Do one wire and one plug at a time, transferring each plug wire to the new distributor cap . I took my time ,turned the heater and radio on in my garage and i was good to go , probably a couple of hours . I fired that baby up and took it for a ride, all i can say is wooow !!!!!!! Get rrr done !! Thanks America Muscle --- from Canada have a nice day eh .


    Year: 1988 Model: Other Driving Style: Street / Strip 'Stangs I have owned: 4 London, ON, Canada

    Helpful (1) (0)

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