Spark Plug - Copper Core - 14mm - 0.750 in. reach - Heat Range 3 - 4 Pack

ACCEL copper core u-groove spark plugs deliver high performance to increase engine power.

PART# 0143-4

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ACCEL U-Groove performance spark plugs produce a larger spark for more power at high RPMs. Improves throttle response & fuel economy, less fouling. Purified Alumina insulator prevents arcing. Machine rolled threads protect heads. 035 gap.


  • U-Groove designed for spark delivery
  • Copper core utilized for maximum spark


Emission Code1
Product TypeSpark Plugs
Part Number0143-4


This part is legal for use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it has a California Air Resources Board Executive Order number or is a direct or consolidated replacement part.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

    *Free Shipping & Handling only offered to the contiguous US on orders over $100.

    Some parts are not legal for use in California or other states with similar regulations.