ACCEL 8161C1 Spark Plug HP Copper - 1 Range Colder than Stock - 9/16" Hex

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4.10 (in)
1.20 (in)
8.90 (in)
MSRP: $132.00
— You save $12.39

Out of stock


Spark Plug HP Copper Spark Plug

HP Copper Spark Plug; 1 Piece; 1 Heat Range Step Colder Than Stock; 9/16in. Hex Size; Resistor; 1.04in. Reach; Tapered Seat Type; 1.25mm Thread Pitch; 12mm Thread Size; 8 Pack;

  • Assembly Method: Tapered
  • Gap Size: N/A
  • Hex Size: 0.5625 in.
  • Package Quantity: 8
  • Projected Tip: Yes
  • Reach: 1.040 in.
  • Resistor: Yes
  • Seat Type: Tapered
  • Thread Pitch: 1.25mm
  • Thread Size: 12mm
  • Torque Capacity: 7 ft/lbs. - 11 ft/lbs.
  • WARNING CA Proposition 65: No

  • Copper Core Is A Better Conductor Than Iridium Or Platinum
  • Copper Dissipates Heat Much Better Than Other Materials
  • C-Cut Design Un-Shrouds The Spark Kernel For A Better Burn
  • Unlike Iridium Or Platinum Plugs; The Accel Hp Plugs Are Gapable
  • Machined Rolled Threads For Precise Thread Engagement
  • One Step Colder Than Stock
  • On The Street Or Strip Accel Hp Copper Core Spark Plugs Deliver!

Made with a Copper Core Which is a Better Conductor than Platinum and Iridium. Delivers a Stronger Spark Especially in High Performance Application Where High Combustion Pressures Are Present. Copper is Much Better at Dissipating Heat Than Other Materials Which Lessons the Chance of a Misfire. 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

Fits the following models:

  • 2008-2014 Ford Expedition

  • 2008-2010 Ford Explorer

  • 2008-2010 Ford Explorer Sport Trac

  • 2008-2010 Ford F-150

  • 2008-2010 Ford F-250 Super Duty

  • 2008-2010 Ford F-350 Super Duty

  • 2008-2010 Ford Mustang

  • As always, 21 Motorsports offers FAST and FREE shipping on ACCEL part number 8161C1. Please look around to find more great items from ACCEL and all the other great spark plugs & glow plugs and ignition system parts you love!
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    Warranty Information

    Full manufacturer's warranty
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    Additional Information

    GPS Enabled:
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