Champion Aerospace REM38S Iridium "S" Electrode Aviation Spark Plug "Fine Wire" FEATURES Champion Aerospace REM38S Fine Wire Piston Spark Plug SPECIFICATIONS • Connection Size: 5​/​8-24 • Electrode Type: Standard • Color: Silver • Suitable For Use With: H35, J35, K35, M35, Travel Air, Super Scout, Skyhawk, Cougar Airframes, Cont GO-300-A, Lyco O-360-A, GO-480-B Engine