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within 2-10 days, depending
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30 days returns

Return will not accepted if the product is opened or after use. All returns requests need to be within 30 days of when the original order was received. Original shipping costs will not be refunded.

NGK 3186 TR5GP G-Power Platinum Spark Plug (4 Pack)





  • NGK G-Power Platinum spark plugs are the best single platinum plug at an economical price. G-Power plugs have a fine wire platinum center electrode that provides excellent performance and fuel efficiency.
  • The NGK G-power Platinum plug has a trapezoidal cut ground electrode that offers increased durability over the conventional nickel plug and improved fuel efficiency, lower emissions, faster starts and quicker acceleration.
  • Trivalent metal plating eliminates the need for anti-seize. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.



  • (1992-88) DODGE / EAGLE 
  • (2012-74) FORD / LINCOLN / MERCURY 
  • (2014-75) GM 
  • (1988-77) JAGUAR 
  • (2009-94) MAZDA 
  • (1993-84) MERCEDES BENZ 
  • (1990-76) VOLVO 


Center Electrode Core MaterialCopper Core
Center Electrode Tip MaterialPlatinum
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel Core
Ground Electrode Quantity1
Ground Electrode Tip DesignTrapezoid
Hex Size5/8 in
Insulator Height53.00 mm
Manufacturer Heat Range5
Part NumberTR5GP
Pre-Gap Size.040 in
Reach.708 in
Resistance5000 Ohms
Seat TypeTapered
Stock Number3186
Thread Diameter14.00 mm



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