Brisk Iridium Performance P1 DOR15YIR-9 Spark PlugP1 DOR15YIR 9 Iridium Yttrium Brisk Performance Spark Plugs Brisk SKU P1 DOR15YIR 9 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 P1 DOR15YIR 9 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

Brisk Silver Racing plugs have a better ignitability than conventional performance spark plugs

MR12S Brisk Racing Silver Spark Plug

Lower voltage requirement

Brisk AR10ZS Replaces:

Brisk SKU  -  LR14TXS

Silver centre electrode

The Platinum core center electrode is surrounded by Zinc Nickel alloy made body and earth electrode giving very low voltage requirement prolonging ignition coil lifespan

Brisk SKU  -  MR10

the propagating flame front toward the center of the combustion chamber

Brisk QR15SL Replaces:

Brisk RR08S Replaces:

Brisk GR14S Silver Racing Spark Plug replaces NGK heat range 6 and 7