Fitment - Ignition coil module for series engines, series Including FH430, FH500V, FH531, FH541V, FH580V, FH601V, FH641V, FH680V, FH721V, FH601D, FH641D, FH680D ,FH721D . Function - After the ignition coil is replaced, the engine starts fast and the operation is smoother than before.Improve engine operating efficiency and electrical performance, better recovery and response, directly replace old or damaged ignition coils, and your engine can work normally. Quality - The ignition coil module is made of high-quality materials and has long service life, wear resistance and no deformation. It has been carefully designed and rigorously tested before leaving the factory to no product defects and provide you with better service. Installation - You can save on the cost of buying an engine by replacing the new ignition coil with a small amount of money. It operates well under all engine operating conditions and increases ignition energy for quick start-up. Manufacturer Part Number: 21171-7024, 21171-7026, 21171-7034, 21171-7037 Replaces Part Number: For Nos. 21171-7001, 21171-7006, 21171-7007, 21171-7013, 21171-7018, 21171-7022, 21171-7024, 21171-7026, 21171-7034, 21171-7037 For No. AM121820 colour: black + silver Material: metal + ABS Package Contents: 2 x Ignition Coil Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.