If your 350Z or FX35, G35 or M35 vehicle has begun to misfire, idle erratically, or hesitate under acceleration a bad coil pack could be to blame. By providing the proper spark to the spark plug all of these running issues can be resolved. This AA Ignition Coil Pack Set of 6 is a direct replacement for the factory and coils. Made by an original equipment supplier (OEM) these coil packs surpass the factory quality and will get your engine running how it should be; smooth and fast. Fits the following vehicles with 3.5L V6 Engine: 2003-2008 FX35 2003-2007 G35 2006-2008 M35 2003-2006 350Z Replaces part numbers: UF401, UF-401, IGC0007, 610-58649, 22448AL61C, 22448-AL61C, C1439, 5C1430, 178-8317, E421, 52-1774, IC521, 22448-AL61, 6734025, GN10246 PLEASE NOTE this is a complete set of 6 ignition coils and replace all of the ignition coils on your vehicle. This ignition coil carries a 24 month or 24,000 mile warranty. This is a compatible replacement part manufactured by AA Ignition. This ignition coil set of 6 is NOT a genuine OEM part. Vehicle makes and their associated vehicle models are registered trademarks of their respective owners. These trademarks and part numbers are used in this listing only to identify the vehicles this ignition coil set fits. AA Ignition is a registered trade mark of GWA Auto Parts Inc.