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Arnold E3.10 Spark Plug, 13/16 in Fill Gap, 0.551 in Thread, 13/16 in Hex
14 mm thread Dia, 3/8 in reach, 13/16 in hex socket. Replaces Champion® 5861, J17LM, RJ17LM, J19LM, RJ19LM, NGK B2LM, BR2LM, B4LM, auto-lite 458, SE458, 456. Quicker starts, saves on fuel.
| Fill Gap Size | 13/16 in |
| Thread Size | 0.551 in |
| Thread Length | 7/8 in |
| Hex Size | 13/16 in |