NAPA Auto Parts Genuine Parts Company
8 Fairfax St SE
Leesburg,  VA  20175
(703) 777-2055
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Store Hours
Mon-Fri:7:30 AM-7:00 PM
Sat:8:00 AM-5:00 PM
Sun:9:00 AM-5:00 PM
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Autolite High Perfomance Racing Copper Resistor Spark Plug

Autolite High Perfomance Racing Copper Resistor Spark Plug

Part #: ASP AR3924
Line: Autolite

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Features & Benefits

Warranty: Standard : No Warranty, Expressed or Implied


Racing/high Performance Spark Plug

  • Special Low Clearance Version Of Base Spark Plug Designed For Applications With Domed Pistons Or Very Little Clearance Available In The Combustion Chamber
  • Cut Back Ground Electrode For Better Ignitability Of The Flame Kernel
  • Anti-Corrosive Nickel Plating For More Corrosion Resistance
  • Large Ground Electrode For Better Heat Transfer
  • Visit the Autolite Brand Page to learn more about our products.


Brand Autolite
Spark Plug Thread Size 14 mm
Spark Plug Reach 3/4 in.
VMRS Code 033003005
Spark Plug Seat Type Gasket
Spark Plug Hex Size 5/8 in.
Quality Level Specialty

Safety Information

Vehicle Fitment Guide

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