High quality sparkplugs are hard to find for older gasoline tractors and engines, sparkplug adapters solve this problem. The adapters allow the use of 14 mm automotive sparkplugs in engines that require larger sparkplugs. Automotive sparkplugs are more robust and readily available. 

Today automotive sparkplugs are guaranteed for 100,000 miles in an automobile engine. This would equate to years in a tractor. Platinum sparkplugs are available in 14 mm size only. These plugs may enhance engine starting and performance. With REAM sparkplug adapters, platinum plugs can be used in practically any engine. 
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