Spark Plug Gasket, 18mm Copper Used on Champion Spark Plugs and Tempest with the following prefixes: REM, RHM, RHB, REB UREM, URHM, URHB and UREB.
Champion recommends periodic replacement of these gaskets at each annual inspection or after cleaning and gapping
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Good Quality and Price
Posted by Todd N on 8th Nov 2013
No to much you can say about washers. They were priced right and are good quality. Like to keep some around to replace when the Plugs are removed and re installed.