NGK (LFR7AIX) Iridium IX 1 Step Colder Spark Plugs Subaru WRX 2006-2014 / STI 2004-2021 | 2309

Product Description

Staff CommentsThe NGK Iridium IX Spark Plugs are a solid choice for Subaru WRX and STi owners looking to upgrade their ignition system. With features like trivalent metal plating, copper core for heat removal, and superior anti-corrosion properties, these plugs offer improved efficiency and heat resistance, perfect for turbocharged vehicles or those with heavy modifications.

Fitment Information:

2006-2014 Subaru WRX

2004-2021 Subaru STi

2005-2009 Subaru Legacy GT

2005-2009 Subaru Outback XT

2004-2008 Subaru Forester XT

Features:

Sold as a set of 4 spark plugs

Trivalent metal plating provides superior anti-corrosion and anti-seizing properties

Corrugated ribs prevent flashover

Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer

Copper core aids in heat removal

Triple seals prevent leakage

Longevity: 50k Miles

60 Days manufacturer Warranty

Shell

Spark Plug Thread Diameter: 14mm

Thread Pitch: 1.25mm

Seat Type: Flat

Reach: 26.5mm (1.04")

Wrench Diameter: 5/8" (16mm)

Terminal Type: Solid

Gap: .031" (0.8mm)

Center Electrode

Electrode Tip Material: Iridium

Electrode Core Material: Copper

Ground Electrode

Material: Nickel

Type: Standard

Shape: Taper Cut

Specifications

Resistor: Yes

Resistor Value: 5k Ohm

Manufacturer Heat Range: 7

Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

Why NGK Iridium? More Durability and a Higher Melting Point compared to Platinum, better center electrode anti-oxidation and anti-erosion, improved ignition, superior anti-fouling, lower required voltage, new metal shell plating process for better anti-corrosion. One Step Colder plugs are recommended for cars with heavy modifications. These NGK plugs will get your Turbo Subaru running smoother and free up some power through increased efficiency and increased heat resistance. These are available in stock heat or one step colder for cars running approximately 100 horsepower more than stock.

Please Note:

Iridium plugs are able to use larger gap setting with less voltage. Some customers choose to regap these plugs to correct misfiring or tune for optimal spark -- do so at your own risk -- slide-type plug gapper will damage the fragile iridium tip.

Import Image Racing is an authorized dealer for NGK Spark Plugs. Purchasing from us guarantee's that your NGK products are always authentic and covered by manufacturer warranty.