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Please ask your question below about Champion Spark Plug RJ12YC - Set of 8 - Fits IH International Harvester 152, 196, 266, 304, 345, 392 An IHPA Salesman will get back with you during business hours which is Monday thru Friday 7:30AM to 4:30PM PST. Questions asked after business hours or during a weekend will be answered the following business day. Thanks!