Brisk Iridium Performance P4 DR15YIR Spark PlugP4 DR15YIR Iridium Yttrium Brisk Performance Spark Plugs Brisk SKU P4 DR15YIR Parameters: Thread Diameter 14mm Thread Reach 19mm 3 4" Hexagon 16mm 5 8" Seat Type Gasket Design Iridum Yttirum Resistor Yes Projected Yes Heat Range 15 Brisk P4 DR15YIR Replaces: With very long lifespan, the P range Brisk spark plugs are the most modern design to fit modern highly efficient and stressed engines. The Iridium core center electrode is surrounded by Yttrium

Brisk DR15BSXC Replaces:

AOR10LGS-T Premium LGS Brisk Racing Spark Plugs

Thread Reach 12

Screw assembly adjusts spark gap quickly and easily

leads and other ignition parts

LR08ZS Brisk Premium Racing Spark Plugs ZC ZS

Brisk SKU  -  3VR12S

Minimum 3 point arc design

NAOR12LGS Premium LGS Brisk Racing Spark Plugs

Brisk SKU  -  EOR15LGS

Brisk SKU  -  DO10LGS-T

5 mm Silver Wire Centre Electrode