IRIDIUM RACING

Warning: On choosing the right racing plug

  • Generally, electrodes that project into the combustion chamber have better ignitability and have better performance. However, because of more exposure to high temperature combustion gases and because ground electrode becomes longer, heat resistance and durability decrease. The higher the level of tuning, the greater the need is to use a less projecting type.
  • As the level of tuning is increased, so does the need for a higher heat range.

Identifying IRIDIUM RACING (Stamped into the Center of the Housing)

Identifying IRIDIUM RACING (Stamped into the Center of the Housing)

IRIDIUM RACING Cross Reference

DENSO NGK
IRIDIUM
POWER		 IRIDIUM
RACING		 DIA.
（mm）		 REACH
（mm）		 HEX
（mm）		 RESISTOR FIGURE TYPE
IW□   14 19 20.6   BP-E R4304A-□
  IW01/IW06-□
(Note 1)		 14 19 20.6   B-E B□EGP
IW□   14 19 20.6   B-E B□EGV
IW□   14 19 20.6   B-E R4118S-□
  IW01/IW06-□
(Note 1)		 14 19 20.6   B-E R4630A-□
  IW01/IW06-□
(Note 1)		 14 19 20.6 R B-E R6252K-□
  IW01/IW06-□
(Note 1)		 14 19 20.6 R B-E R6918B-□
  IW01/IW06-□
(Note 1)		 14 19 20.6 R B-E R6918C-□
IW□   14 19 20.6 R B-E R6021E-□
  IW01/IW06-□
(Note 1)		 14 19 20.6 R B-E R6385-□P
  IW01/IW06-□
(Note 1)		 14 19 20.6 R B-E R7376(Ir)
    14 19 20.6   B-E SEMISURFACE R5649-□
    14 19 20.6 R B-E SEMISURFACE R6712-□
  IWM01-□ 14 19 20.6   B-E COMPACT R5184-□
    14 19 20.6 R B-E COMPACT R5300A-□
    14 19 20.6 R B-E COMPACT R5300N-□
    14 19 20.6 R B-E COMPACT R5540F-□
  IWM01-□ 14 19 20.6 R B-E COMPACT R6179A-□P
    14 22 20.6 R B-E COMPACT R6179C-□PA
    14 22 20.6 R B-E R7376B(Ir)
  IA01-□ 14 22 16 R BC-E COMPACT R6120A-□
  IA01-□ 14 22 16 R BC-E COMPACT R7282A-□（Ir)
  IAE01-□ 14 19 16 R BC-E COMPACT R6120-□
  IAE01-□
(Note 2)		 14 19 16 R BC-E COMPACT R6120C-□
  IAE01-□
(Note 2)		 14 19 16 R BC-E COMPACT R6120M-□
  IAE01-□ 14 19 16 R BC-E COMPACT R7282-□(Ir)
  IAE01-□
(Note 2)		 14 19 16 R BC-E COMPACT R7282C-□(Ir)
  IAE01-□
(Note 2)		 14 19 16 R BC-E COMPACT R7282M-□(Ir)
IK□   14 19 16 R BK-E ISO R6888A-□
IK□   14 19 16   BK-E ISO R7112-□
IK□   14 19 16 R BK-E ISO R7113-□
IK□   14 19 16 R BK-E ISO R7433-□(ir)
IK□   14 19 16   BK-E ISO R7114-□
IK□   14 19 16 R BK-E ISO R7115-□
  IK01-□ 14 19 16   BK-E ISO R7116-□
  IK01-□ 14 19 16 R BK-E ISO R7117-□
  IK02-□ 14 19 16   BK-E ISO R7118-□
  IK02-□ 14 19 16 R BK-E ISO R7119-□
  IK01-□ 14 19 16 R BK-E ISO R7434-□(Ir)
  IK02-□ 14 19 16 R BK-E ISO R7279-□(Ir)
    14 19 16 R BK-E SEMISURFACE R6601-□
    14 19 16   BK-E SEMISURFACE R6711-□
IQ□   14 19 16 R BCP-E R7435-□(Ir)
IQ□   14 19 16   BCP-E R7232-□
IQ□   14 19 16 R BCP-E R7233-□
IQ□   14 19 16   BC-E R7234-□
IQ□   14 19 16 R BC-E R7235-□
  IQ01-□ 14 19 16   BC-E R7236-□
  IQ01-□ 14 19 16 R BC-E R7237-□
  IQ02-□ 14 19 16   BC-E R7238-□
  IQ02-□ 14 19 16 R BC-E R7239-□
  IQ01-□ 14 19 16 R BC-E R7436-□(Ir)
    14 19 16   BC-E SEMISURFACE R5883-□
    14 19 16 R BC-E SEMISURFACE R6690-□
IKH□   14 26.5 16 R LFR R7437-□(Ir)
  IKH01-□ 14 26.5 16 R LFR R7438-□(Ir)
IWF□   14 12.7 20.6   B-H R5525-□
    14 12.7 20.6   B-H R5530-□
  IRE01-□ 14 21.5 20.6 R ROTARY R6725-□
  IRE01-□ 14 21.5 20.6 R ROTARY R7420-□(Ir)
    14 21.5 20.6   ROTARY, SURFACE T813J-N13
  IRL01-□ 14 21 20.6 R ROTARY RX-8(L) R7440A-□L(Ir)
  IRT01-□ 14 19 20.6 R ROTARY RX-8(T) R7440B-□T(Ir)
  IXU01-□
(Note 3)		 12 19 18   D-E R216-□
IX□
(Note 3)		 IXU01-□
(Note 3)		 12 19 18   D-E R217-□
    12 21 18   D-Z R2188-□
    12 19 16 R DC-E SEMISURFACE R2349-□
  IXU01-□
(Note 3)		 12 19 16 R DC-E R2525-□
    12 19 16   DC-E SEMISURFACE R2430-□
  IU01-□ 10 19 16   C-E R016-□
IU□A   10 19 16   C-E R017-□
  IU01-□ 10 19 16   C-E R0373A-□(Ir)
    10 19 16   C-E SEMISURFACE R0045G-□
  RU01-□ 10 19 16   C-E SEMISURFACE R0045J-□
  RU01-□ 10 19 16 R C-E SEMISURFACE R0045Q-□
  IU01-□ 10 19 16 R C-EH HALF THREAD R0379A-10(Ir),R0409B-□
IUF□(A)   10 12.7 16   C-H R0161-□
IY□   8 19 12.7 R E-EH SEMISURFACE R847-□

(Note 1) IW06 is a non resistor type
(Note 2) Remove the gasket with nippers before use
(Note 3) IX□B and IX□ is different from IXU01-□ only in the hex size (18 mm or 16 mm), and are otherwise interchangeable in terms of installation.
(□) show the heat range.

Warning

  • IRIDIUM RACING is suitable for racing and tune-up. Please select a spark plug with a thermal value that matches the level of tuning, based on the thermal value for standard spark plugs and IRIDIUM POWER plugs.

Actual products may differ from images shown.