Replacement hydraulic filter for Marvel saw models 13 and 13A (all series), 15 and 15A (all series), 81M and 81A through series number 10, 5 and 25A. Replace filter twice per year or as required to reduce hydraulic contamination and extend pump life. Alternate part numbers: 13-CBR49, 15-RCA450, 25-CBR49, 25-RCB49-1, 25-RCBR49, 81-RCBR49. Also converted to parts numbered: 13DCBR49, 15DRCA450, 25DCBR49, 25DRCB49-1, 25DRCBR49, 81DRCBR49.