540/1000 RPM PTO Shaft
CTPA-70255802 Replacement Part to Fit:  Allis-Chalmers For Models: 170, 175, 180, 200, 185 SN TO 12525 NOTE: Center mounting ring is 5.750" diameter, w/ 4 bolt holes inner & outer. 7.875" long  Price:  $174.20  Buyers Club Price:  $156.78