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

SPARK PLUG CONSTRUCTION

• 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

Item
Leading side
Type NGK
Trailing side
*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.
End Of Sie

HIGH-TENSION LEAD CONSTRUCTION

• Blue and green tapes are on the trailing side of the plug caps to prevent mis-installation.
End Of Sie
IGNITION SYSTEM
Specification
*1
RE7A-L
*2
(RE6A-L)
*1
RE9B-T
PAINT LOCATION
(STANDARD TYPE SPARK PLUGS ONLY)
GROUND
ELECTRODE
0.8 mm
{0.03 in}
GREEN
BLUE
BLUE
BLUE AND
GREEN TAPES
GREEN
(TRAILING SIDE)
CHU011801008S04
01–18
CENTER ELECTRODE
(IRIDIUM)
CHU0118S005
CHU011801008S05
CHU0118S006
01–18–3