Ignition & Electrical

NGK TR55 3951 Spark Plug Heat range 5

NGK TR6 4177 Spark Plug Heat range 6

Holley Universal Coil On Plug Harness Holley Universal Coil On Plug Harness is used to connect Holley HP Smart Coil Ignition Harness 558-312 or factory LSX coil harness to Holley HP or Dominator ECU's.  

Holley HP Smart Coil Ignition Harness 558-312 Holley HP Smart Coil ignition harness includes a pair of coil harnesses for 8-cylinder engines. It is used in conjuction with the Holley LSX plug and play main harness for converting from factory LSX coils...