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MSD Ignition 3731 Iridium Tip Spark Plug


MSD Ignition 3731 Iridium Tip Spark Plug Single - Plug Type 11IR4Y - [Available While Supplies Last]

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Pricing: $6.73


MSD Ignition - Iridium Tip Spark Plug P/N 3731 Features:

  • Proprietary Ceramic Formula
  • Unique Insulator Design
  • Yttrium Copper Core
  • Machined Electrode
  • 1mm Iridium Tip
  • Outlast Performance Plugs
  • Improves Comprehensive Drivability And Economy
  • Superior Design

View the Full List of Automotive Applications »

Below is an abbreviated list of applications for the Iridium Tip Spark Plug.
1000 Series Pickup, 1500 Pickup, 1500 Series Pickup, 300, 330, 400, 600, A100 Pickup, A100 Van, A108 Van, Acclaim, Ambassador, American, AMX, Aries, Aspen, B100 Van, B150 Van, B200 Van, B250 Van


Racers never stop experimenting as they search for every way to wring out more power or handling performance to to gain an edge over the competition. The team at MSD is no different as we strive to deliver the products you need to meet your performance goals. We continue to innovate and invent components and technology that deliver performance and reliability with products that are easy to use and install. Over the course of 40-plus years, MSD Performance has been driving the development of innovative components that helped shape the way our cars race and perform. From super speedways to road courses, land speed racing to top fuel dragsters, and of course your traditional hot rod, MSD has provided the components to fire nearly anything in motorsports. Early on, MSD focused squarely on ignition systems with revolutionary products like the multiple sparking CD ignition, timing and rev controls, billet aluminum distributors and the Pro-Mag, an incredible breakthrough in power and endurance. Today MSD is developing electronics for your entire powertrain. The Atomic EFI systems for the LS engine platform and throttle body are now complemented with a transmission controller. Our DynaForce Starters and Alternators ensure that your engine cranks over to fire up and the Alternators keep it charged. MSD is poised to deliver components that work and communicate together to provide performance and value.


  • 19720449
  • 5695246
  • 085132037315
  • MSD Ignition
  • New

Shipping Information

  • Item Requires Shipping
  • 0.1 lbs.
  • W0.9000” x H0.9000” x L3.3000”

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