4901 – NGK Spark Plug, R7437-8 Resistor Copper Iridium Racing 1.25 x 14 Millimeter Thread 26.5 Millimeter Reach 5/8 Inch Hex Heat Range 8 0.028 Inch Gap Gasket Seat Single

NGK Spark Plug featuring R7437-8. Part #: NGK4901.

Features

• NGK Racing Spark Plugs Often Come With Specially Designed Ground Electrodes
• Most Extreme Form Of These Plugs Come With A Ring-Shaped Ground Electrode
• Spark Jumps From The Middle Electrode To The Ring-Shaped Ground Electrode
• Easy To Install
• No Supplier Warranty