SET OF 4 OEM SUBARU NGK SILFR6A IRIDIUM SPARK PLUGS 22401AA670 FORESTER OUTBACK

Description

Laser Iridium
Laser Iridium® spark plugs provide superior ignitability and long service life. Smallest tip diameter available Iridium / Platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions
Laser welded Iridium center electrode tip
Platinum disc welded to backside of ground electrode provides long life
Trivalent Metal Plating for superior anti-corrosion and anti-seizing
Tapered ground electrode to minimize quenching
Consistent and stable spark
Faster starts and quicker acceleration
Better fuel economy and lower emissions
Spark Plug Type Performance Differences
Center Electrode Core Material
Copper Core
Center Electrode Tip Material
Iridium
Gap Size
0.032 in
Ground Electrode Quantity
1
Hex Size
5/8"
Insulator Height
ISO
Manufacturer Heat Range
6
Additional Info
5K Ohm
Seat Type
Gasket
Reach
26.5mm
Thread Diameter
14 MM
Ground Electrode Tip Design
SPE
Ground Configuration
Standard
Ground Electrode Core Material
Nickel Core
Alternate/OEM Part Number(s): 22401AA670, SILFR6A