UJD40741 Spark Plug---Autolite 386

Fits: 560, 606, 656, 660, 666, 686, 706, 756, 766, 806, 826, 856
3616, Hydro 70, Hydro 86, T4, T5, T340, 500 Crawler, 600 Crawler

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

Replaces: CHAMPION: D10, K13, D14, M14, RD14, K15J, D16, D16J, RD16, UD16, D21, D89D