H4M, installed on most versions, is sensitive to the quality of the spark, and here the spark plugs come to the fore.
Timely replacement of these consumables guarantees stable engine operation, optimal fuel consumption and no misfires. Ignoring this simple rule can result in failed ignition coils or even damage to the catalytic converter due to unburned fuel.
Many owners Nissan Almera G15 are faced with a dilemma: buy original parts or look for high-quality analogues. The difference in price is often significant, but the service life of the products varies greatly. In order not to make a mistake with your choice and not to overpay, you need to understand in detail the specifications, electrode materials and manufacturer’s recommendations.
H4M engine specifications and spark plug requirements
Engine series H4M (or HR16DE in the international classification) is a 1.6-liter unit with distributed fuel injection. The design of the cylinder head and valve timing requires strict adherence to clearances and sparking characteristics.
You need to understand that a spark plug is not just a metal rod, but a complex technical device. In the engine Nissan Almera The heat range of the candle is critical. If it is too low, the electrodes will quickly coke; if too high, there is a risk of glow ignition, which can destroy the piston.
Original candles from Nissan usually have a copper central electrode and are designed to last about 30-40 thousand kilometers. However, modern technologies allow the use of iridium or platinum elements, which last much longer. 25, and the length of the threaded part is 26.5 mm.
Original candles and popular analogues
When choosing original spare parts for Nissan Almera G15 you get guaranteed compliance with factory parameters. Part number in the manufacturer's catalog - 22401-1KF0A. This is a standard copper spark plug that provides stable performance but requires frequent replacement.
Many experts recommend paying attention to analogues from brands NGK or DENSO, who are often suppliers to the conveyor belt. For example, model NGK 94203 (Iridium IX) has an iridium electrode and can last up to 60-80 thousand kilometers without loss of efficiency.