goods as described. Delivery on time / fast. Perfect fit for 2000 Jeep Grand Cherokee with 4.7L engine. Easy installation. Screwing into the tank and pump is easy! No leaks. installation tips. Fittings OEM 18mm - both ends. Removing the air cleaner housing will provide easier access to the pump end connection and will allow the use of a conventional box or open-end wrench. Expect the air box screws (3) to rust or freeze. A houndstooth wrench may be required to access the expansion tank fitting. The new hose connection assembly is 18mm in diameter at the end of the tank; 16 mm on the pump side. Estimated time to complete installation, including air cleaner housing removal, 1.5 hours.