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Copper Spark Plug - .375 in Reach - Heat Range 6 - Gasket Seat - 13/16 Hex

Projected Tip - Resistor - 14mm thread and .375 in. reach, set of 4.

PART# 0437S-4

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$27.52   Suggested Retail
$24.77   Your Price
Estimated shipping date: 06/15/2018
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ACCEL performance spark plugs produce a larger spark for more power at high RPMs. Improves throttle response and fuel economy, less fouling. Purified Alumina insulator prevents arcing. Machine rolled threads protect heads.


  • C-Cut ground electrode
  • Resistor Shorty Plugs
  • 14mm Thread - .375 in Reach
  • Flat/Gasket Seat
  • Projected Tip
  • 13/16 in Hex


Emission Code1
Product TypeSpark Plugs
WarrantyLimited 90 Day Warranty
Part Number0437S-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


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      *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.