Suitable for most 2 stroke and 4 stroke lawnmower and cultivator engines including the following: AC Delco LM46, LM49 - Autolite 258, 404, 456, 458, XST458 - Bosch stk 7515, 7538, 7801, W12E, W45T3, W9ECO, WR11EO - Brisk J19 - Champion 861, 868, 947, J8, J8C, J8J, J17LM, J19LM, QJ19LM, RJ19LM - Denso W9LM-US, W14LM-U, W9-U, W9LMUS, stk 6004, stk 6057, stk 6014 - Eyquem 202CT - General Motors 5612975, 1559494, 5613283 - Mega-FireSE-19J - Motorcraft A7LM, A7CLM, A11LM, stk 98, stk 117 - MTD 759-3338 - Napa X507 - Newstar GL3C - NGK 741, 1147, 3110, 3410, 3841, 4146, 4861, 4864, 5798, 6150, 7931, B2LM, B2-LM, B2LMY, BR2LM, B4LM, B4LM BL1, B4LMY BL1, B2, CS1 - Prestolite 14-09-01 - Splitfire SF045F - Torch GL2, GL3, GL4 - Valley Forge 118 - Workshop Essentials EX20 Note: This spark plug does NOT fit Honda engines