Iridium spark plug NGK 90288 Laser Iridium Spark Plug DILKAR7M8 for Toyota/Lexus/Honda/Mazda/Nissan/Infiniti/Hyundai/Kia

Iridium Spark Plug NGK 90288 Laser Iridium Spark Plug DILKAR7M8 for Toyota/Lexus/Honda/Mazda/Nissan/Infiniti/Hyundai/Kia

The NGK 90288 Laser Iridium series spark plug is a high-tech component of the ignition system, designed to ensure stable operation of modern gasoline engines. The use of precious metals in its construction allows for maximum combustion efficiency of the fuel-air mixture, which directly affects the vehicle's power and fuel economy. This model belongs to NGK's premium line, where the central electrode has an iridium tip, and the ground electrode is reinforced with a platinum insert.

Technological Advantages of Iridium Alloy

The central electrode with an iridium tip has an ultra-high melting point and exceptional hardness. This allowed NGK engineers to reduce the electrode diameter, which concentrates the electric charge and requires less voltage to generate a spark. As a result, the engine starts faster even in low temperatures or with a weak battery charge. The platinum pad on the side electrode minimizes electrical erosion, maintaining the electrode gap unchanged throughout the product's lifespan.

Performance Characteristics and Protection

The spark plug body is protected by a special trivalent metal coating, which provides reliable anti-corrosion protection and prevents the thread from "sticking" to the cylinder head. The ceramic insulator with five ribs prevents current leakage and avoids flashovers outside the combustion chamber. The internal copper core effectively dissipates heat, preventing the spark plug from overheating and pre-ignition, which is critically important for the operation of high-revving Japanese and Korean engines.

Compatibility and Applicability

The NGK 90288 (DILKAR7M8) spark plug is a universal solution for a wide range of naturally aspirated and turbocharged engines. It is fully compatible with Toyota Camry (2.5 A25A engine), RAV4, and Corolla. In the premium segment, it is suitable for Lexus ES, NX, and RX models. Owners of Honda Accord, CR-V, and Civic can use this model as a full replacement for standard plugs. The part is also recommended for installation on Mazda 6, CX-5, CX-3, Nissan Altima, Maxima, Infiniti Q50, and Q60. For the Korean automotive industry, the model is relevant in the Hyundai Sonata, Elantra, Kia Optima, and Sportage lines.

Usage Method and Selection Recommendations

Spark plugs should be installed strictly on a cold engine using a torque wrench. Observing the tightening torque specified on the packaging ensures proper heat transfer and combustion chamber sealing. Before purchasing, it is necessary to check the OEM part number with the vehicle's technical manual, as engine modifications may require different heat ratings. It is recommended to change the plugs as a complete set (according to the number of cylinders) to ensure uniform operation of the power unit.

• Brand: NGK

• Brand Registration Country: Japan

• Country of Manufacture: Japan

• Material: Iridium, Platinum, Steel, Ceramic, Copper

• Color: Silver, White

• Weight: 47 g

• Condition: New

• Manufacturer Code: 90288

• Marking: DILKAR7M8

• Heat Rating: R7M8

• Central Electrode Type: Iridium Tip

• Side Electrode Type: Platinum Insert

• Thread Type: Long Reach

• Thread Pitch: 1.25 mm

• Thread Diameter: 12 mm

• Hex Size: 14 mm

• Thread Length: 26.5 mm

• Electrode Gap: 0.8 mm

• Seal Type: Flat (with Washer)

• Resistor Resistance: 5 kOhm

• Package Contents: 1 spark plug in individual cardboard box

• Purpose: Ignition of fuel mixture in ICE

• UPC: 087295802885

• Product Group: Ignition System

• Compatibility: Toyota, Lexus, Honda, Mazda, Nissan, Infiniti, Hyundai, Kia