NGK Iridium IX spark plugs are designed specifically for the performance enthusiast. Iridium IX spark plugs offer extreme ignitibility, improved throttle response and superior anti-fouling.

Product Features:

Fine wire Iridium center electrode ensures high durability and a consistently stable spark
Iridium alloy has an extremely high melting point, perfect for today's high-performance engines
Trivalent metal plating has superior anti-corrosion and anti-seizing properties
Special taper-cut ground electrode shape to allow for more area for flame expansion

NOTES: Sold as individual plugs. Please order correct quantities for your Application.

Features
0.6mm Center Electrode
Enhanced Ignitability
Trivalent Metal Plating
Fine Wire Center Electrode Ensures High Durability and a Consistently Stable Spark
Iridium Alloy has an Extremely High Melting Point, Perfect for Today's High-Tech, High Performance Engines
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

Specifications
Thread Size: 14mm
Thread Pitch: 1.25mm
Seat Type: Tapered
Resistor: Yes
Resistor Value: 5K Ohm
Reach: 25mm (1")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .043" (1.1mm)
Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.
Heat Range: 6
Longevity: 40-50k

Orders placed before 10:00 AM (EST) are typically processed the same business day. Orders placed after 10:00 AM will be processed the following business day.

Please allow extra time during promotions or new product launches, as order volume may be higher than usual.

All Race Factory orders are carefully hand-picked, packed, and shipped from our U.S. facility.

Returns are handled on a case-by-case basis and must be approved before any item is sent back. Please contact us to request a return authorization.

• Items must be unused, in original condition, and in the original packaging.
• Electrical components and sensors are non-returnable once installed or opened.
• Customers are responsible for all return shipping costs. We recommend using a trackable shipping method.
• All sale and clearance items are final sale and cannot be returned or exchanged.