{"product_id":"ngk-u5163-48533","title":"NGK U5163-48533 Ignition Coil 48533 Pencil Coil [1-output type]","description":"\u003cp\u003e【NGK U5163-48533 Ignition Coil 48533 Pencil Coil [1-Output Type]】\n\u003cbr\u003e■Product Description\n\u003cbr\u003eRole of the Ignition Coil\n\u003cbr\u003eIn internal combustion engines using spark plugs, a high voltage of 20,000 to 35,000V is required to discharge electricity in the combustion chamber during the compression stroke. An ignition coil is a type of transformer that converts the 12V battery voltage into the high voltage required for spark plug discharge. It basically consists of a primary coil, a secondary coil, and a core (iron core), and epoxy resin is filled into the case to ensure insulation between these parts.\u003c\/p\u003e\n\n\u003cp\u003eSpecifications\n\u003cbr\u003ePrinciple of High Voltage Generation in Ignition Coils\n\u003cbr\u003eThere are various types of ignition coils, differing in external shape and number of output terminals, but the principle of high voltage generation is the same for all of them. The primary coil is connected to the battery via an igniter (switch). First, the ECU (engine control unit) turns the igniter ON, allowing current to flow through the primary coil. This generates a bundle of magnetic field lines called magnetic flux in the core (iron core), which is the axis of the primary coil, and the core (iron core) becomes an electromagnet. Then, when the ECU determines the engine ignition timing, it switches the igniter to the OFF state, stopping the current to the primary coil. As a result, the core (iron core) is no longer an electromagnet, and the magnetic flux inside the core (iron core) also disappears. When the magnetic flux inside the core (iron core) suddenly disappears, a high voltage is generated in the secondary coil, which shares the same core (iron core) as its axis, due to electromagnetic induction*, in proportion to the turns ratio of the primary coil and secondary coil. The high voltage generated in the secondary coil causes a spark to jump across the gap of the spark plug, initiating the combustion of the air-fuel mixture (gasoline + air).\n\u003cbr\u003e*A coil has the property of generating voltage when the magnetic flux passing through it changes. This voltage generation phenomenon is called electromagnetic induction.\n\u003cbr\u003eSince the voltage generated in a coil increases in proportion to the number of turns, ignition coils increase the winding of the secondary coil to generate high voltage.\n\u003cbr\u003eType: Pencil Coil [1-Output Type]\n\u003cbr\u003eIgnition coils are installed directly on each spark plug, eliminating the need for spark plug wires. This is currently the most commonly adopted type by automotive manufacturers.\n\u003cbr\u003eCompatible Genuine Part Number: 19070-97501\u003c\/p\u003e\n\n\u003cp\u003e■Notes on Images\n\u003cbr\u003e*Images are for illustration purposes only. They may include products of different sizes or colors. Product design and specifications are subject to change without notice. Please be aware of this.\u003c\/p\u003e\n\n\u003cp\u003e■Precautions\n\u003cbr\u003e1. Always stop the engine before inspection or replacement.\n\u003cbr\u003e2. Please check for any oil adhesion or leakage around the spark plug hole. Oil adhesion or leakage can cause malfunction.\n\u003cbr\u003e3. Perform inspection and replacement according to the service manual of each automobile manufacturer.\n\u003cbr\u003e4. Please handle the connector carefully when attaching or detaching it. Damage to the connector can lead to poor electrical conductivity.\n\u003cbr\u003e5. Do not use a product that has been dropped, as dropping or impacting it may cause cracks or damage to internal components.\n\u003cbr\u003e6. Please use the correct part number ignition coil as specified in this document.\n\u003cbr\u003e7. Do not use the ignition coil in this document for any purpose other than its intended use.\n\u003cbr\u003e8. When storing, avoid high temperatures and high humidity.\n\u003cbr\u003e9. When the engine check (MIL) lamp illuminates, before (or after) replacing the ignition coil, always clear (reset) the diagnostic (self-diagnosis\/OBD) error code according to the service manual or similar. Failure to clear the error code may lead to problems such as the engine check lamp remaining lit.\u003c\/p\u003e","brand":"日本特殊陶業(NGK)","offers":[{"title":"Default Title","offer_id":46119126565099,"sku":"ngk-u5163-48533","price":8056.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/ngk-ignition_d34ede13-face-4f00-aeea-f28ac38384a3.jpg?v=1737445104","url":"https:\/\/bikeman.jp\/en\/products\/ngk-u5163-48533","provider":"バイクマン","version":"1.0","type":"link"}