Description

Champion RM77N and 7302 Spark Plug, hex is 7/8" (22.2 mm), thread is 18 mm, reach is 3/4" (19 mm), heat range is 3, electrode is made of fine wire, material (c/g) is platinum, and the gap is 0.012” (0.3mm). Simple Type: Accessory Bosch Industrial Series Spark Plugs combine over one hundred years of spark plug engineering experience, robust construction methods, and the highest quality heavy duty components. The result is a superior spark plug which exhibits the unsurpassed reliability, and a greatly extended service life in natural gas applications. Use of precious metals in both the center and ground electrodes in almost all the plugs provides exceptional resistance to wear. Download the datasheet (PDF)