Set of 8 ruthenium spark plugs NGK 92274 (LKAR7AHXS) for Nissan Mazda Honda Infiniti Acura

Set of 8 NGK 92274 (LKAR7AHXS) Ruthenium Spark Plugs for Nissan Mazda Honda Infiniti Acura

Premium solution for boosted and V-shaped engines

Professional ignition set consisting of eight original Ruthenium HX series units, specifically designed for stable operation of modern gasoline engines with a large number of cylinders. The use of ruthenium as the main element of the coating on the central electrode provides outstanding temperature resistance and prevents gradual destruction of the spark zone under the influence of electro-erosion processes. The design of the units allows maintaining the nominal gap throughout the entire period of use, eliminating the reduction in spark formation efficiency and ensuring uninterrupted engine operation under high loads.

Switching to this type of ignition elements guarantees the full potential of the power unit. Timely equipping the engine with a ready-made set of parts allows obtaining the following operational advantages:

• Improvement in vehicle dynamics due to accelerated formation and propagation of the flame front in the combustion chamber.

• Elimination of the probability of misfires during intense acceleration and at high speeds.

• Reduction of overall thermal and electrical load on ignition coil elements by reducing breakdown voltage.

• Optimization of cold engine start process at critically low ambient temperatures.

Factory nickel or chrome-plated coating of the housing effectively counteracts metal oxidation processes, preventing the risk of thread sticking to the cylinder head and facilitating subsequent replacement.

Structural strength of insulation and thermal conductivity of units

The central part of each spark plug is equipped with a deeply inserted copper core, which serves for continuous and rapid removal of excess heat from the working area of the electrodes. This technical solution protects the piston group from the destructive effects of uncontrolled pre-ignition. High-density technical ceramics used in the production of the insulator have excellent dielectric properties, preventing spark breakdown to the ground and directing all energy potential strictly into the inter-electrode gap.

Precision connection of rare earth metal with the base is performed using laser welding technology, which eliminates the occurrence of hidden internal voids or delaminations. The products are adapted to the stringent requirements of modern environmental standards:

• Protection of onboard electronics from impulse radio interference due to the built-in monolithic resistor.

• Tight fixation in the well using a molded washer, eliminating the slightest gas breakthrough from the chamber.

• Beveled profile of the ground electrode, reducing energy losses of the spark on adjacent metal surfaces.

• Full self-cleaning from soot deposits when reaching working temperature indicators.

The set is delivered in a branded transport box, where each part is placed in an individual box with a plastic tip to protect the electrodes. The product is fully ready for installation on cars in auto services and workshops in Ukraine.

Compatibility table by vehicle brands and modifications

These spark plugs have a special extended threaded part. It is recommended to familiarize yourself with the list of supported modifications before purchasing.

Complete update of the ignition element set of 8 pieces allows stabilizing idle speed and restoring smooth engine operation in all operating modes.

Technical Specifications

• Brand: NGK

• Brand registration country: Japan

• Material: Ruthenium, platinum, technical ceramics, nickel-plated steel, copper

• Size: Thread diameter 12 mm, thread pitch 1.25 mm, thread length 26.5 mm, hex size 14 mm

• Color: Silver, white

• Weight: 368 g

• Condition: New

• Product group: Car engine ignition systems

• Purpose: Ignition of the fuel-air mixture in the cylinders of a gasoline internal combustion engine

• Compatibility: Nissan, Mazda, Honda, Infiniti, Acura cars from 2007–2025 with engines of 1.5L, 2.0L, 2.4L, 2.5L

• Features: Ruthenium HX series, ultra-thin central electrode, built-in interference suppression resistor 5 kOhm, increased erosion resistance

• OEM number: LKAR7AHXS

• Factory article: 92274

• Quantity in set: 8 pcs.

• Heat range: 7

• Inter-electrode gap: 1.1 mm

• Seal type: Flat sealing washer

• Standard tightening torque: 15–20 Nm

• Service life: Up to 120,000 km of vehicle mileage