Check the listing for details. E3 Spark Plugs E3.42 - 8 Spark plugs. Condition: New. Listed at 49.99 USD. E3 Spark Plugs E3.42 - 8 Spark plugsFits: Avanti, Buick, Cadillac, Chevrolet, DeTomaso, Dodge, Ford, GMC, Jeep, Lincoln, Mercury, Oldsmobile, Pontiac (See Fitment Above) E3.42 is a 14mm, 0.460” reach plug with a tapered seat. It fits domestic applications in the 80’s to early 90’s and is widely stocked in automotive retail stores. 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: E3.42Resistor: ResistorHex Size: 5/8"Thread Reach: 0.460"Thread Diameter: 14mmSeat: TaperTip/Gap: DiamondFIRE Fixed Gap Cannot Be Adjusted