![Spark Plug PIAGGIO RG4HC copper M10x1, wrench width 16mm long thread similar to NGK CR9E | SIP-Scootershop Spark Plug PIAGGIO RG4HC copper M10x1, wrench width 16mm long thread similar to NGK CR9E | SIP-Scootershop](https://images.sip-scootershop.com/en/31750a75-06fe-43de-8afe-8a3ea5ac947c/600x600/spark-plug-piaggio-rg4hc-copper_PI438027.jpg)
Spark Plug PIAGGIO RG4HC copper M10x1, wrench width 16mm long thread similar to NGK CR9E | SIP-Scootershop
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Spark Plug CHAMPION RG4PHP copper M10x1, wrench width 16mm interference suppressed/long thread similar to DENSO U24ESRNZU/NGK CR9EB | SIP-Scootershop
![Spark Plug CHAMPION RG4PHP copper M10x1, wrench width 16mm interference suppressed/long thread similar to DENSO U24ESRNZU/NGK CR9EB | SIP-Scootershop Spark Plug CHAMPION RG4PHP copper M10x1, wrench width 16mm interference suppressed/long thread similar to DENSO U24ESRNZU/NGK CR9EB | SIP-Scootershop](https://images.sip-scootershop.com/en/97e3487c-452b-49a4-be10-dd06b41f6030/600x600/spark-plug-champion-rg4php-copper_CHRG4PHP_2.jpg)