Whole machine hydraulic cylinder seal kit for john deere 490d excavator for all 4 standard equipment cylinders, 2 boom, 1 arm & 1 bucket. Includes rod bushing, piston wear rings & extra rod wear ring unique to this series. If you have any questions please call 207-744-4028 or toll free. Backhoe-loader, bulldozer, loader etc. , equipment model number, what the cylinder does i. Bucket, boom, blade, etc. & if you have it, the cylinder number, oe part number, or equipment serial # etc. We will hunt for the right kit for your machine & send you a link to the listing if it is available. Some kits may include extra parts because they are made to fit the design variations of a particular model. Kits for rod glands with pressed in metallic bearings (such as bronze) generally will not contain a replacement bearing, however phenolic & plastic bearings are normally included. If a bearing is available separately we will let you know. Because seal designs are continuously improving, and because of possible previous repairs, some kits may have a different seal design than the seal you remove, however, unless the original seal grooves were machined in a previous repair the replacement seals should fit & function properly. Never attempt to service a pressurized cylinder, or a cylinder connected to a load, never use air or hydraulic pressure to disassemble a cylinder. The free listing tool.The item “Whole Machine kit for John Deere 490D Excavator” is in sale since Thursday, January 21, 2010. This item is in the category “Business & Industrial\Heavy Equipment Parts & Accs\Construction Equip Parts”. The seller is “foxprints2003″ and is located in Multiple USA Locations. This item can be shipped to United States.