Water Pump
CTPA-79016822 Replacement Part to Fit:  Allis-Chalmers For Models: (WC, WD, WD45, WF ALL W/GAS ENG.) Casting# 125577. Replaces: 108317 casting # 9009248. 3/8" bypass hole.  Price:  $98.75  Buyers Club Price:  $88.87