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.

Features:

• For use with Black Coil Boot, OE Coil 8L3E or ACCEL 140033 or 140033-8
• One Piece Design - Won't break off in head during removal like two piece design
• Copper Core - Copper is a better conductor than Iridium or Platinum plugs
• Heat Dissipation - Copper dissipates Heat Much better than other materials
• "C" - Cut Design - un-shrouding the spark kernel
• See PN 346 for Single Spark Plug
• Gapable - Unlike Iridium or Platinum
• Machine Rolled Threads-Precise thread engagement

Specifications:

• Electrode Material: Copper
• Emission Code: 2
• GAP: n/a
• Heat Range: Stock
• Hex Size: 9/16"
• Length: Standard
• Product Type: Spark Plug
• Projected Tip: No
• Qty: 8
• Reach: .8125"
• Resistor: Yes
• Seat Type: Tapered
• Style: Copper Core
• Thread Size: 16mm