Diamond Power Timing Chain kit works with Chevrolet Trailblazer Colorado GMC Envoy Canyon Hummer H3 Isuzu Ascender i-280 i-370 Saab 9-7x Buick Rainier 2.8L 3.5L 4.2L Belt Warranty (25,000 Miles), Chain Warranty (38,000 Miles) (This product must be installed by a certified professional mechanic) Same day shipping when purchased before 3pm EST Our products are tested and meet or exceed OEM performance requirements Fits 2004-2006 Chevy Colorado L4 2-8L L5 3-5L Available Timing Chain Kits and Timing Belt Kits