E3.20 Spark Plug

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E3.20 Spark Plug
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ITEM # : E3.20


Small engine plug that primarily fits 4-cycle, overhead valve engines.




E3.20 is a 14mm, 0.750” reach plug with a gasket seat. It is used in a variety of four cycle, overhead value small engine applications. 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 full-size center electrode also provides optimal performance over an extended product life.


NGK:  BCP4ES-11, BKR4E, BKR4E-11, BKR5E, BKR5E-11, BKRES, BKR6EKB-11, FR4, FR5

Part Number: E3.20

Resistor: Resistor

Hex Size: 5/8"

Thread Reach: 0.750"

Thread Diameter: 14mm

Seat: Gasket

Tip/Gap: DiamondFIRE Adjustable Gap

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Reviewed by Roygene
10/28/2017 - 03:30:59 PM
E3.20 Spark Plug
Years ago I tried my first E3 Spark Plugs in a Kohler 15 HP engine. I ran that engine for 10 years with that plug. Today I use two E3.20 plugs in my Kohler SV720 with excellent results. My engine feels powerful and doesn't appear to use as much fuel with the E3's as with the standard plug.
I have a 4 cylinder in an S-10 Chevy pickup that I used E3's in for 5 years with no problems. I occasionally inspect them and they still look good so I leave them alone. The truck has 178,000 miles on it. I believe in E3 spark plugs