E3 E3.10F Spark Plug, 14 mm Thread, 13/16 in Hex, For: Briggs & Stratton and Tecumseh L-Head Engines

All E3 spark plugs feature DiamondFire Technology truly the last spark plug you'll ever need to buy. This E3 spark plug is warranted to provide better performance, to properly discharge a spark and to be free of defects in materials and workmanship for the life of your engine. Quicker starts, more power, saves gas, anti-foul design and lower emissions. Energy increased power up to 12% over other brands in 2 and 4 stroke engines. Efficiency pays for itself by using up to 13% less gas versus other spark plug brands. Ecology reduces toxic emissions up to 58% in long-term use, versus other plugs. All tests performed per EPA protocol 40 CRF 90 by independent laboratories.