CAT Hydraulic Cylinders

Aftermarket Caterpillar Hydraulic Cylinders from Sigma PartFinder are cost-effective alternatives to Genuine Caterpillar rams. Much cheaper than original new spare parts, these cylinders are guaranteed to fit and carry a 6-month work warranty. Or if you prefer to repair your hydraulic rams, check out our Hydraulic Seal Kits pages, for JCB and Caterpillar.


Our range includes high quality replacement hydraulic cylinders for Caterpillar 325, 330 345 and 349 excavators, aftermarket rams for CAT D6H, D6R, D7H, D7R, D8R and D9 dozers, rams for 924, 950, 962, 966G, 966H and 980G wheel loaders, and motor graders such as 140G, 140H and 16G. In addition, we can help with replacement rams for Caterpillar 730, 725 and 735 dumpers, and mining excavators such as Caterpillar 365, 385C, 374D, 390D and 390F. We also have a full range of Backhoe Replacement Cylinders, for models such as 428, 432, 434 and 444.