Napol Performance 03-08 IGNITION COIL PACKS NISSAN 350Z INFINITY M35 G35 FX35 3.5L V6 VQ35DE UF401 - Improved Combustion - Increased Ignition Performance - Increased BHP and economy - Improved throttle response and smoothness - Smoother idle - Eliminate engine misfires and hesitation - No spark blowout at higher boost levels if forced induction - Direct Bolt in part / No modifications required - Solid construction - 2 Year Warranty