Autolite Platinum Spark Plug

Photo of Platinum Spark Plug

Description

The Autolite Platinum Spark Plug (AP3923) draws on over 100 years of ignition engineering and more than 11 billion plugs produced worldwide. Autolite built the platinum line around a center wire platinum firing tip paired with a high nickel alloy side electrode, delivering reduced gap erosion, fewer misfires, and increased durability compared to standard plugs. The OE-compatible design drops into factory sockets without modification, so replacement is straightforward. Autolite designed and engineered the Platinum Spark Plug in the USA and serves as an official NASCAR performance partner. Drivers looking for an additional step up can consider the Autolite Double Platinum or Iridium XP lines for even further performance gains.

Features

  • Full Platinum Firing Tip: Virtually eliminates gap erosion for long service life
  • Necked-Down Center Electrode: Fires quicker and cleaner with reduced voltage demand
  • High Nickel Alloy Side Electrode: Maintains a precise gap for dependable spark delivery
  • Easier Starts: Lower voltage requirement helps the engine fire up more reliably
  • Improved Fuel Economy: More efficient combustion reduces fuel waste versus standard plugs
  • Quicker Acceleration: Faster, cleaner firing improves throttle response during driving
Autolite Platinum Spark Plug }}
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Blain # 982228
Mfr # AP3923
Photo of Platinum Spark Plug
Autolite Platinum Spark Plug }}
Shop All Autolite
Blain # 982228
Mfr # AP3923
$ 4 49

Description

The Autolite Platinum Spark Plug (AP3923) draws on over 100 years of ignition engineering and more than 11 billion plugs produced worldwide. Autolite built the platinum line around a center wire platinum firing tip paired with a high nickel alloy side electrode, delivering reduced gap erosion, fewer misfires, and increased durability compared to standard plugs. The OE-compatible design drops into factory sockets without modification, so replacement is straightforward. Autolite designed and engineered the Platinum Spark Plug in the USA and serves as an official NASCAR performance partner. Drivers looking for an additional step up can consider the Autolite Double Platinum or Iridium XP lines for even further performance gains.

Features

  • Full Platinum Firing Tip: Virtually eliminates gap erosion for long service life
  • Necked-Down Center Electrode: Fires quicker and cleaner with reduced voltage demand
  • High Nickel Alloy Side Electrode: Maintains a precise gap for dependable spark delivery
  • Easier Starts: Lower voltage requirement helps the engine fire up more reliably
  • Improved Fuel Economy: More efficient combustion reduces fuel waste versus standard plugs
  • Quicker Acceleration: Faster, cleaner firing improves throttle response during driving

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