REPLACES 661003B BREATHER FOR PRIMARY CASE
USED ON 52/53 CHIEF
CAN BE USED ON ALL CHIEF PRIMARY DRIVES
ALSO REQUIRED WHEN FITTING 4 SPEED GEARBOX TO CHIEF TO ALLOW BREATHING AS THE 4 SPEED OVERDRIVE UNIT IS SEALED FROM THE PRIMARY
REPLACES 661003B BREATHER FOR PRIMARY CASE
USED ON 52/53 CHIEF
CAN BE USED ON ALL CHIEF PRIMARY DRIVES
ALSO REQUIRED WHEN FITTING 4 SPEED GEARBOX TO CHIEF TO ALLOW BREATHING AS THE 4 SPEED OVERDRIVE UNIT IS SEALED FROM THE PRIMARY