GOOD WORKING ALLISON B300R TRANSMISION . ROBBED THE CUMMINS ENGINE OUT OF A RUNNING BUS SO IT IS AVAILABLE AS A SPARE OR INSTALL NOW. FLUID IS NORMAL, NO BURNT SMELL. WORKING WEEL WITH NO MALFUNCTION CODES. TRANSMISSION HAS SIX SPEEDS, (2 OVERDRIVE RATIOS) WITH RETARDER, RETARDER COOLER AND RETARDER ACCUMULATOR. YOU GET EVERYTHING IN THE PICTURE, HOSES, BRACKETS WITH COOOLER AND ACCUMULATOR. CAN SEND YOU THE ALLLISON SPEC SHEET IN PDF IF INTERESTED. CALL OR TEXT 250-618-4553