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CHAMPION 71ECO QC12YCX (RC12YC) 5/8-in Small Engine Spark Plug in the Spark Plugs department at Lowes.com
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OAKTEN Replacement Spark Plug for Champion RC12YC Briggs & Stratton 491055 (200-Pack) 90-00185 - The Home Depot
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Amazon.com: Champion Spark Plug QC12YC for RFI Compliant Engines (691043,10786,14-132-03S) / 946 : Automotive
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1PCS TORCH Spark Plug K5RTC Replace for Candle FR8DC+ FR8DC0 CHAMPION RC14YC OE013 QC12YC RC12YC ENKER SFE55CP MOTORCRAFT AGSP52
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Champion QC12YC vs. RC12YC Spark Plugs: Key Differences, Compatibility, and Practical Advice | PVP News
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