Thread Size ° M14*1.25
Reach ° 17.5 mm
Hex Size ° 16 mm
Resistor ° Yes
Center Electrode Material ° Iridium
Ground Electrode Material ° Platinum
12568387 ITR4A15 41-101 0242225659 9404 RS14WYPB5 5325 IT16 VT16 12568387
What spark plugs say about your engine?
Blisters on the insulator tip, melted electrodes, or white deposits are signs of a burned spark plug that is running too hot. Causes can include the engineoverheating, incorrect spark plug heat range, a loose spark plug, incorrect ignitiontiming or too lean of an air/fuel mixture. The spark plug should be replaced.