Is your old McCulloch or Partner chainsaw's clutch drum worn out or the bearing gone? This is a direct replacement part. It's a 3/8-inch pitch, 6-tooth (6T) clutch drum that comes with the needle bearing already installed – a real time-saver. It fits a whole bunch of popular older models like the McCulloch Mac 7-38 (738), 7-40 (740), 8-38 (838), 8-42 (842), and the equivalent Partner models (P738, P740, P842, etc.). The part numbers it replaces are 501628301 and 530057905. Super important: make sure your original drum is also 3/8\-6T before ordering! Comes as one complete unit. A straightforward fix to get your trusty saw running smoothly again. Perfect for DIYers or small engine repair shops.
