E3.74 is a 14mm, 1.000â€ reach plug with a tapered seat. It fits a wide variety of late model applications, especially Ford applications. E3 automotive plugs have three legs securing the DiamondFIRE electrode to the shell. This allows for excellent heat transfer and helps to create more turbulence in the cylinder. The patented DiamondFIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use. The unique ground electrode and a full-size center electrode also provides optimal performance for a guaranteed five years or 100,000 miles.
Part Number: E3.74
Hex Size: 5/8"
Thread Reach: 1.000"
Thread Diameter: 14mm
Tip/Gap: DiamondFIRE Fixed Gap Cannot Be Adjusted
Reviewed by mrcunninghamz
09/20/2016 - 09:37:19 PM
Great Mid Range RPM
I had a set installed in my 350z... Took a while to install but that's the fault of the engine setup of the VQ35DE not the plugs ;). Once in I noticed that the mid range RPMs felt much smoother and that my overall gas mileage seemed to improve.
I believe in this technology and strongly recommend these plugs.