UT40742 Spark Plug---Autolite 3116

Fits: Cub, A, B, C, H, M, Super A, Super C, Super H, Super M, I, O, T, W-4, W-6, 100, 130, 140, 154, 184, 185, 200, 230, 240, 300, 330, 340, 350, 400, 404, 424, 444, 450, 454, 460, 464, 504, 544, 574, 674, 2400, 2424, 2444, 2500, 3500, 3514

Dimensions: 18mm thread----1/2" Reach----7/8" Hex