2x E3.24 spark plugs - REPLACES NGK CMR5H CMR6H CMR7H CHAMPION RZ7C BOSCH USR7AC

Bosch USR7AC. Champion RZ7C. E3 spark plugsE3.24 with DiamondFire Technology. E3 Advanced DiamondFire Technology. The spark itself occurs only when an avalanche of electrons migrates from the two electrodes (anode to cathode).

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