UJD40744 Spark Plug---Autolite 388---Hot Plug

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

Fits: A SN 488000 & UP, AH SN 488000 & UP, AN SN 488000 & UP, ANH SN 488000 & UP, AO SN 260000 & UP, AR SN 260000 & UP, B SN 96000 & UP, BN SN 96000 & UP, BNH SN 96000 & UP, BR SN 96000 & UP, BO SN 96000 & UP, BW SN 96000 & UP, BWH SN 96000 & UP, G SN 13000 & UP, GN SN 13000 & UP, GW SN 13000 & UP, H, HN, HNH, HWH, 50, 60, 70, 520, 530, 620, 630, 720, 730, 3010, 3020, 4000, 4010, 4020, 4230, "R" PONY ENGINE