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Arnold E3.22 Spark Plug, 13/16 in Fill Gap, 0.551 in Thread, 13/16 in
14 mm thread Dia, 3/4 in reach, 13/16 in hex socket. Saves on fuel and Reduces emissions. Replaces Champion N9YC, N11YC, N12YC. RN9YC, RN11YC, RN12YC. Replaces NGK B6EB11, BP5EA, BP5ES, BP5ES11, BP5EV, BP5EY, BP6ES, BP6EV, BP6EY, BPR5ES, BPR5ES11, BPR5EV, BPR5EY, BPR6ES, BPR6EV, BPR6EY, BPR7EY11, BPR6EBL11, BU8ET, BUR6EA11, BUR6EB11, GR4, GR45. Replaces Autolite 63, 64, 65, 66, 405, 646, 4263, 4265, AP63, AP64, AP66, AP646, APP64, APP646, XP63, XP64, XP646. XST4265.
| Fill Gap Size | 13/16 in |
| Thread Size | 0.551 in |
| Thread Length | 3/4 in |
| Hex Size | 13/16 in |