Denso (5345) IKH22 Iridium Power Spark Plug Evo 9/STI/WRX

This Denso(5345) IKH22 Iridium Power Spark Plug is a stock-replacement option for the Evo 9 and serves as a "one-step-colder" choice for the Subaru STi and the 06-14 WRX. The price listed is for one spark plug, so please adjust the quantity accordingly. Scientifically designed, this spark plug is a high-quality, expert-recommended choice for engine maintenance.

Vehicle Fitment:

Lancer Evolution IX 2006

WRX 2004-2014 (One Step Colder)

STI 2004-2021 (One Step Colder)

Forester XT 2004-2008 (One Step Colder)

Legacy GT 2004-2008 (One Step Colder)

Product Description:

Denso Iridium Power spark plugs feature a 0.4mm iridium tipped laser welded fine wire center electrode that reduces required voltage and improves firing performance. Tapered cut U-Groove ground electrode increases ignitability and decreases quenching. Machine rolled threads prevent seizing or cross threading during installation and removal. 100% pre-fired to assure the highest quality possible. Purified alumina powder insulator provides exceptional strength and thermal conductivity. Five rib insulator prevents flashover. Copper-glass seal bonds center electrode and insulator for a gas-tight seal.

• Thread Diameter - 14mm
• Thread Pitch - 1.25mm
• Seat Type - Gasket
• Reach - 26.5mm (1.04")
• Hex Size - 5/8" (16mm)
• Terminal Type - Solid
• Overall Height - ISO
• Gap.031" (0.8mm)Center Electrode
• Material - Iridium
• Type - Fine Wire
• Size - 0.4mm
• Projection - Projected
• Material - Nickel
• Type - U-Groove
• Shape - Taper Cut
• Resistor - Yes
• Resistor Value - 5k Ohm
• Heat Range - 22
• Torque SpecsCast Iron: 26-30 lb. ft. Aluminum: 15-22 lb. ft.
• Longevity - 30k Miles