Coil pack and spark plugs combo replacement for 4.2 L6 2002 2003 2004 2005 Chevy Trailblazer, 02 03 04 05 Trailblazer, 04 05 Buick Rainier, 04-06 GMC Canyon, GMC Envoy Isuzu Ascender, Isuzu i-290 i-370. Coil pack and spark plugs combo replacement for 2.8 3.5 04 05 06 Che-vrolet Colorado. Ignition Coils Part Number: UF303 12570616 UF-303 C1395 12568062 5c1392 E255 52-1743 GN10114 IC414 12568062 19300921. NPAUTO coils pack and spark plug are designed and produced under high standards, with premium materials, which will meet or exceed OEM specifications. The coils pack and spark plugs can solve issues caused by failed coils and spark plugs like Engine Misfire, Hard to Start, Rough Engine Idle, Decrease in Power, Poor Fuel Economy etc.. To achieve a better and smoother ignition system, it's suggested to replace the ignition coils and spark plugs at the same time if your ignition coils have failed due to worn-out spark plugs..
