Accel® 346 - HP Copper Spark Plug

  • Sale
  • Regular price $13.38


2004 - 2008 Ford F-150/F-250/F-350



ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.



Emission Code 1
GAP n/a
Heat Range Stock
Hex Size 9/16"
Length Standard
Product Type Spark Plug
Projected Tip No
Qty 1
Reach .8125"
Resistor Yes
Seat Type Tapered
Style Copper Core
Thread Size 16mm
Weight 1.0000
Part Number 346