Koyo leads the radiator industry in quality, performance and fitment. Koyo engineers carefully design the radiators offering a true plug and play installation No drilling, cutting, relocating, or stretching to get their radiators to fit properly.These OEM Koyo replacement radiators feature plastic end tanks with a aluminum core, allowing for a cost effective option compared to the OEM units. Fits 04-07 Buick RAINIER 5.3L V8 AT 06-07 Buick RAINIER 6.0L V8 AT 02-08 Chevrolet TRAILBLAZER 5.3L V8 AT 06-09 Chevrolet TRAILBLAZER V8 AT 03-09 GMC ENVOY 5.3L V8 AT 06-07 GMC ENVOY 6.0L V8 AT 03-06 Isuzu ASCENDER 5.3L V8 AT 03-07 Isuzu ASCENDER 5.4L V8 AT 02-05 Oldsmobile BRAVADA 5.3L V6 AT 05-09 Saab 9-7X 5.3L V8 AT