Heavy Equipment Parts stocks hydraulic cylinders for excavators including boom cylinders, arm cylinders, and bucket cylinders. Hydraulic cylinder leaks reduce digging force and machine accuracy replacing or resealing a worn cylinder restores full hydraulic performance. We stock complete replacement cylinders as well as cylinder seal kits for in-field rebuilds. Our cylinders are manufactured to OEM bore and stroke dimensions for a direct-fit installation. Compatible with Komatsu, Caterpillar, Hitachi, Hyundai, Kobelco, Volvo, Doosan, and other major brands. Fast dispatch from our Sydney warehouse.