Spark Plug CHAMPION RG6YC copper M10x1, wrench width 16mm interference suppressed/long thread similar to NGK CR7EKB/CPR8E/CPR8EB | SIP-Scootershop
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Amazon.com: Lawnmowers Parts 2 (Two) Genuine Champion Spark Plugs RC12YC Replaces Kohler 12 132 02-S;M78543 : Patio, Lawn & Garden
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Amazon.com: (Pack of 2) Champion Spark Plugs for John Deere M78543, M87543, RC12YC Engine : Automotive
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