NGK 91448 DILKR8B6 Laser Iridium Spark Plug 12mm Gasket Seat Heat Range 8

Vehicle Fitment

• 2011-2015 Mitsubishi Lancer (2.0L 4-cylinder, All Trims)
• Additional Mitsubishi applications using a 12mm x 1.25mm gasket seat plug with 26.5mm reach - verify fitment with your vehicle's specification before ordering
• OEM Cross-Reference: Mitsubishi 1822A079

Fitment Notes

• Thread: 12mm x 1.25mm gasket seat - confirm engine head thread spec and seat type before ordering
• Reach: 26.5mm (1.04") - verify cylinder head depth to ensure proper combustion chamber exposure
• Pre-set gap: 0.024" (0.6mm) - confirm against engine manufacturer specifications; do not adjust unless required by your application
• Resistor type (5k Ohm) - compatible with resistor-type ignition systems; confirm compatibility with your vehicle's ignition
• Rated for 80,000-100,000 miles service life under normal operating conditions
• Sold individually - order quantity to match cylinder count (4 plugs for 4-cylinder applications)

Features

• Laser-welded fine-wire 0.6mm iridium center electrode delivers superior ignitability with significantly reduced required firing voltage versus standard or copper plugs
• Projected electrode design positions the firing tip closer to the center of the combustion chamber for more complete, efficient combustion
• Platinum-tipped fine-wire taper cut ground electrode provides even wear distribution and extends service life to 80,000-100,000 miles
• Iridium alloy's extremely high melting point makes it ideal for today's high-compression, direct-injection, and turbocharged engines that generate intense combustion temperatures
• Pure alumina silicate ceramic insulator provides superior dielectric strength and efficient heat transfer, reducing the risk of electrical punch-through under high-voltage ignition conditions
• 98% pure copper core maximizes heat dissipation from the electrode to the shell across a wide range of operating temperatures
• Triple gasket sealing eliminates combustion gas leakage past the shell for consistent compression retention and efficient combustion
• Trivalent metal plating (silver-chromate and zinc) delivers superior anti-corrosion and anti-seizing properties for long-term reliable service
• Corrugated ribs on the insulator prevent flashover in high-voltage ignition systems

Specifications

• NGK Stock Number: 91448
• NGK Part Number: DILKR8B6
• Series: NGK Laser Iridium
• Heat Range: 8
• Thread Diameter: 12mm
• Thread Pitch: 1.25mm
• Seat Type: Gasket
• Reach: 26.5mm (1.04")
• Hex Size: 5/8" (16mm)
• Terminal Type: Solid (Non-Removable)
• Resistor: Yes - 5k Ohm
• Pre-Set Gap: 0.024" (0.6mm)
• Center Electrode: Iridium Fine Wire, 0.6mm, Projected, Copper Core
• Ground Electrode: Platinum Fine Wire, Taper Cut
• Insulator: Pure Alumina Silicate Ceramic, 50mm Height
• Seals: Triple Gasket
• Plating: Trivalent (Silver-Chromate and Zinc)
• Service Life: 80,000-100,000 miles
• Torque (Cast Iron Head): 10.8-18 lb-ft
• Torque (Aluminum Head): 10.8-14.5 lb-ft
• OEM Cross-Reference: Mitsubishi 1822A079
• Sold As: Individually (1 plug per package)

Included Components

• 1x NGK Laser Iridium Spark Plug (PN: DILKR8B6 / Stock: 91448)

Product Description

The NGK 91448 (DILKR8B6) is a Laser Iridium spark plug engineered as a direct OEM replacement for the 2011-2015 Mitsubishi Lancer 2.0L and other compatible Mitsubishi applications. The fine-wire 0.6mm iridium center electrode is laser-welded to the copper core and positioned in a projected configuration that places the firing tip closer to the combustion chamber center for more complete fuel ignition. A platinum-tipped taper cut ground electrode completes the fine-wire firing set, delivering even wear distribution and a service life of up to 80,000-100,000 miles.

The high-grade alumina silicate ceramic insulator and triple gasket sealing system ensure superior dielectric protection and combustion gas containment, while trivalent metal plating protects against corrosion and thread seizing during long service intervals. The 5k Ohm resistor suppresses electromagnetic interference for compatibility with the vehicle's ignition system and onboard electronics. Pre-gapped at 0.024" (0.6mm) to match OEM specifications - sold individually, order one per cylinder.