NGK R5724-9 Racing Spark Plug

NGK racing spark plugs are built to withstand the severe mechanical and thermal shock associated with high-revving, high-compression engines. NGK racing plugs feature electrode materials--precious metals like platinum or gold/palladium--for greater durability and low voltage requirements.

* Heat Range:  9
* Reach:  .708"
* Thread:  14mm
* Seat Type:  Tapered
* Wrench:  5/8"
* Sold Individually