Mazda RX-8 2004 - High-Tension Lead Construction; Spark Plug Construction; Specification

IGNITION SYSTEM
01–18–3
01–18
SPARK PLUG CONSTRUCTION
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• Iridium-tipped spark plugs have been adopted on both trailing and leading sides to improve durability.
• A center electrode with a thick insulator and extremely thin tip (diameter of 0.8 mm {0.03 in}) and small single-
ground electrode have been adopted to stabilize firing under a thin fuel-air mixture. At the same time, high-heat
resistance has been improved by decreasing the temperature of the electrode and the insulator.
• Spark plugs with an internal resister have been adopted to remove noise caused by the ignition system. The
effect of which prevents ignition noise from mixing with the audio system.
• White paint (leading side), blue paint (trailing side) is on the the spark plugs to prevent mis-installation.
(Standard type spark plugs only.)
Specification
*1
: Standard equipment
*2
: Hot type plug: Available only for customers who often drive their car at very low speed which causes the plugs
to foul easily.
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HIGH-TENSION LEAD CONSTRUCTION
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• Blue and green tapes are on the trailing side of the plug caps to prevent mis-installation.
End Of Sie
GROUND
ELECTRODE
0.8 mm
{0.03 in}
CENTER ELECTRODE
(IRIDIUM)
PAINT LOCATION
(STANDARD TYPE SPARK PLUGS ONLY)
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Item Specification
Type NGK
Leading side
RE7A-L
*1
(RE6A-L)
*2
Trailing side
RE9B-T
*1
BLUE AND
GREEN TAPES
(TRAILING SIDE)
GREEN
BLUE
BLUE
GREEN
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