Kanoan Iridium Spark Plug Ignition Coils for Nissan Serena C25 NC25 Set of Aftermarket (Part Numbers 22401-CK81B, 22401-ED815, 22401-JA01B,

Nissan Serena Compatible Iridium Spark Plugs & Ignition Coils 4-Piece Set (Aftermarket Parts) 【Set Contents】 ・Iridium Spark Plugs × 4 ・Ignition Coils × 4 *Instruction manual is not included. *Please note that we do not provide support or answer inquiries regarding installation. *Please have the installation performed by a professional mechanic or service provider. [Compatible Vehicles] Nissan Serena C25 / NC25 (Model Year: May 2005 - November 2010) Engine Type: MR20DE [Genuine Part Numbers] ● Spark Plugs: ・22401-CK81B / 22401-ED815 / 22401-JA01B ● Ignition Coils: ・22448-JA00C / 22448-ED000 / 22448-EN200 / 22448-1KT0A *Depending on the vehicle grade and model year, processing may be required or installation may not be possible, so please be sure to check before purchasing. [Product Description] ◆ What is an ignition coil? An ignition coil is an important component that supplies high voltage to the spark plug to ignite the fuel. When it deteriorates, the ignition power weakens, which can cause engine malfunction and poor fuel efficiency. ◆ What is an iridium spark plug? A high-performance spark plug that uses iridium in the center electrode. Compared to ordinary plugs, it has superior ignition performance and durability, and can be expected to have effects such as improved combustion efficiency, smoother acceleration, and improved fuel efficiency. [Recommended replacement intervals] ・Ignition coil: 80,000 km to 100,000 km ・Iridium spark plugs: 60,000 km to 100,000 km [Consider replacing if you experience any of the following symptoms] - Difficulty starting the engine - Unstable idling, excessive vibration - Sluggish acceleration, feeling of lack of power - Poor fuel economy - Knocking (abnormal combustion) while driving - Engine check light illuminated - Strong exhaust odor, or white/black smoke These symptoms may be caused by deterioration of the spark plugs or ignition coils. We recommend replacing them as soon as possible for a comfortable driving experience. Nissan Serena compatible iridium spark plugs & ignition coils (set of 4) - Aftermarket parts [Set contents] 4 x Iridium Spark Plugs 4 ignition coils *Instruction manual is not included. *Please note that we do not provide support or answer inquiries regarding installation. *Please have a professional company or mechanic install it. [Compatible Vehicles] Nissan Serena C25 / NC25 (Model years: May 2005 - November 2010) Engine type: MR20DE [Genuine Part Number] ●Spark plug: ・22401-CK81B / 22401-ED815 / 22401-JA01B ● Ignition coil: ・22448-JA00C / 22448-ED000 / 22448-EN200 / 22448-1KT0A *Depending on the vehicle's grade and year, modifications may be required or installation may not be possible. Please be sure to check before purchasing. [Product Description] ◆ What is an ignition coil? The ignition coil is a crucial component that supplies high voltage to the spark plug to ignite the fuel. When it deteriorates, the ignition power weakens, which can cause engine malfunctions and decreased fuel efficiency. ◆ What are iridium spark plugs? High-performance spark plugs using iridium in the center electrode. Compared to conventional spark plugs, they offer superior ignition performance and durability, and are expected to improve combustion efficiency, smoother acceleration, and fuel economy. [Guidelines for replacement] Ignition coil: 80,000 km to 100,000 km Iridium spark plugs: 60,000 km to 100,000 km [Consider replacing the part if you experience these symptoms] - The engine is difficult to start. - Unstable idling, excessive vibration - Acceleration is sluggish, and it feels underpowered. - Fuel efficiency has worsened - Knocking (abnormal combustion) occurs while driving. - The engine check light came on. - The exhaust fumes have a strong odor, or white or black smoke is emitted. These symptoms may be caused by deterioration of the spark plugs or ignition coils. For a more comfortable drive, we recommend replacing them sooner rather than later.