Another great Orca kit with easy to install with super instructions. Cools block only Chev 4 cyl 1986 thru 2006. Cools the block only. Allows your engine to run as GM intended for best performance and economy. A pressurized 50/50 mixture of antifreeze and tap water instead of corrosive water with hot and cold engine areas allows round cylinders and constant temps. Like cancer, it can be slowed down to allow your engine to last years longer. We need photos of your installed engine, which may vary the assembly of your kit from our photo.