Evergreen TK10428DWP 02-08 Buick Chevrolet GMC Hummer Isuzu Oldsmobile 2.8 2.9 3.5 4.2 DOHC Timing Chain Kit Water Pump (with Gear) Fits: 02-08 Buick Chevrolet GMC Hummer Isuzu Oldsmobile 2.8L 2.9L DOHC 16V / 3.5L DOHC 20V / 4.2L DOHC 24V (see description below) Meets or exceeds OEM performance requirements Utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience Premium quality link belt type timing chain for exceptional durability Ideal for stock replacement and mild performance applications