SaltDogg Spreader Part # 3027636 - Shaft for Gear Motor 3015377 2012-Up. This is used on the TGS03 and TGS07 tailgate spreaders from SaltDogg. This gear box shaft connects to the gear motor itself and the spinner. The spinner shaft is used with the gear motor 3015377 and was used on the 2011 and older SaltDogg TGS07 spreaders. If you have a 2012 and newer TGS spreader, check out part # 3027636 shaft spinner.