Pack of 8 Ignition Coils for - Cadillac Chevy GMC Pontiac - G8 Grand Prix H3 Tahoe Yukon Silverado Impala Trailblazer Avalanche 5.3L 6.0L V8-12611424 12570616 8125706160 D510C DIRECT REPLACEMENT/ UPGRADE over your original stock coils. We only use the highest grade materials. This makes our product durable and reliable under extreme conditions while providing High Electrical Resistance, strong Spark from plugs, and being resistant to Corrosion and Abrasion IGNITION COILS FOR 5.3l and 6.0l V8 vehicles, including Lacrosse, Rainier, Cadillac CTS, CTS, Escalade, Avalanche, Camaro, Colorado, Corvette, Express, Impala, Monte Carlo, Silverado, SSR, Suburban, Tahoe, Trailblazer, Canyon, Envoy, Savana, Sierra, Yukon, H2, H3, H3T, Ascender, G8, Grand Prix, GTO, and Saab 9-7X BUICK, CADILLAC, CHEVY, GMC, HUMMER, ISUZU, PONTIAC, and SAAB owners please check fitment bar and description before you BUY IT as the ignition coil pack can change based on the year/ month of manufacture of your vehicle Compatible Part Numbers: C1511, UF413, D513a, 5c1554, E893, 52-1819, Ic533 12611424, 33-1192, 673-7002 Five Year Warranty Eliminate misfire Direct installation into vehicle Increase horsepower Stronger throttle response Durable as they come Custom-made for the road Fit OE equipment with ease Tested in real life situations Most coils comepre-greased