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1997-2013 GM 4.8/5.3/6.0L Trucks Coil-Near-Plug Conn Kit

1997-2013 GM 4.8/5.3/6.0L Trucks Coil-Near-Plug Conn Kit

Product ID : 38-1629MPG
Weight : 5.00 lbs

Price: $189.00
  • Increases mileage 15% or YOUR MONEY BACK!
  • Direct OEM replacement, exceeds OEM specifications, OBD-II computer safe
  • Increase power to the spark plug up to 400% over stock
  • 0 Ohm resistance, no RFI / EMI interference thanks to patented protector ring
  • Patented* design works with all fuel injection systems, street cars and race cars
  • Solid stainless connector cable with stainless snap lock spark plug connectors
  • High temperature silicone boots, 8MM jacket with fiberglass-reinforced braid resists temperatures up to 500 degrees f (1200 degree f. boots optional).
  • Includes all necessary hardware
  • Over 600 fitments! 

* Granatelli O ohm wires are patent protected by United States Patent number 7,185,622. This patent covers our unique method of producing ignition wires of extremely low resistance while maintaining very high noise suppression. The benefit of this invention is that full electrical energy from the ignition source is transmitted to the spark plug. The end result of the application of this method is increased horsepower, torque and fuel economy.


Update to previous review. I have installed these on two 2012 Chevrolet trucks with 5.3 liter engine. I wish GM would make these the OEM plug wire. The trucks runs much smoother with more power, does not down shift as much. With 2000 miles on wires my truck is averaging 2-2.5 MPG better. My son has about 1000 with new wires and he is getting 2.5 - 3 MPG better.


I put these on my 2012 Cheverolet truck with the 5.3 liter engine that has 8600 miles on it. I sent Granatelli a email to get the correct set. They are a little long but work fine. I saw improvement in performance after installing them but more improvement after disconnecting truck battery for a hour to clear computer memory. The truck runs much smoother with more power, does not down shift as much. I have only drove about two hundred miles on new wires so can't say for sure about gas mileage although based off truck computer fuel caculator it seems to have improved around 10%. I am hoping for more with more driving. Over all I am very happy


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