Pre-Gap Size 0.044 IN Thread Diameter 0.551 MM Type Spark Plugs OE/OEM Part Number IKH20, 5344 Manufacturer Warranty 3 Months Fitment Type Direct Replacement Material Iridium Hex Size 14.3 Millimeter Manufacturer Part Number DENSO Brand DENSO Interchange Part Number IKH20 UPC Does not apply .
Got these high performance spark plugs to go with my high performance coils and they add so much power to my car , I love them, can’t go wrong with the Iridium Power IKH20 Spark Plug.....Jackson Orfield, Kingsport, Tn.